Bite-sized Next.js

Hello students 🙂 I'm Jeonghwan Lee.

There are only 5 days left until the recruitment for the 9th Winter Bite Challenge closes, so I am reaching out once again ⏰
(Until midnight on Monday, April 6th)

✦ What is the Bite-Sized Challenge?

The One-bite Challenge is a completion challenge conducted through missions and a progress chart.

It was designed based on the fact that many people find it difficult to complete a course,
and as a course creator, I am conducting this with a sense of responsibility to ensure that students don't feel alone
and can enjoy completing the course until the very end.

✦ Gifts for Participants

For the 9th Winter Bite Challenge participants, we are providing a 30% discount coupon for the course corresponding to the challenge.

Please refer to the detailed page for each challenge for the lecture discount coupons!

✦ List of Available Challenges

• JavaScript in One Go (5 missions per week)

• Bite-sized TypeScript (5 missions per week)

• Bite-sized React.js (Once-a-week mission, project and simple quiz)

• Bite-Sized Next.js (Once-a-week mission, project and simple quiz)

✦ Still undecided about signing up for the challenge?

If you are hesitant about applying for the 9th One Bite Challenge,
please sign up for the free Live session scheduled for Monday, April 6th at 7 PM!7 giờ tối thứ Hai ngày 6 tháng 4!

We will be holding a brief introduction and Q&A session about the One Bite Challenge, so we look forward to your participation.

Sign up for the free Live session: https://link.onebitefe.com/r/7wqf9w

We look forward to the active participation of all our students.

Thank you 🙇🏻‍♂️

One Bite Challenge 9th Cohort Recruitment Guide

The amount and duration vary for each challenge, so please refer to the link below for more details 🙂

✦ What is the Bite-Sized Challenge?

The Winter Bite Challenge is a completion challenge conducted through missions and a progress chart.

It was designed based on the fact that many people find it difficult to complete a course,
and as a course creator, I am conducting this with a sense of responsibility to ensure that students don't feel lonely!
The goal is to help everyone enjoy the journey and successfully finish the course until the end.

✦ How does it work?

Participants will be provided with a curriculum schedule and missions to review the lecture content.

Follow the curriculum schedule to take the lectures, then complete and submit the review missions.

(For the JS and TS challenges, missions are provided 5 times a week; for the React.js and Next.js challenges, missions are provided once a week)

How to Apply

1) Apply for a challenge on your desired topic

This 9th Winterloode Challenge will be conducted with a total of 4 courses.

Please apply for the course you want through the link below 🏆

• JavaScript in One Go (5,500 KRW)

• React.js in One Bite (9,900 KRW)

• One Bite TypeScript (5,500 KRW)

• Bite-sized Next.js (9,900 KRW)

2) Apply for Free Live OT

If you have applied for the challenge of your choice according to the instructions above,

You can apply for the free Live OT for challenge participants via the link below.
(Scheduled for April 6th at 7:00 PM)

Apply for Live OT

(Even if you do not apply for the Live OT, a recorded version will be provided to all challenge participants)

We appreciate your interest 🙏

Hello students, I'm Jeonghwan Lee 😊

The production of the new course "One Bite React Practical Library Kit" has been completed and is scheduled to be released sometime next week.

Pre-registration Event Information

To celebrate the launch of the new course, we are holding a pre-registration event.
All applicants will receive a 50% discount coupon, and 30 winners will be selected by lottery to receive a 100% discount coupon.

Apply for Pre-registration ) https://link.onebitefe.com/r/3m97g0

‣ New Course Introduction
Course Intro Video: https://youtu.be/PRlo1LB-uA4

With a total duration of 8 hours and 50 minutes, this course covers how to manage state efficiently using Zustand and Tanstack Query, and how to style quickly and easily using Tailwind CSS and Shadcn/ui.

‣ Course Features

Intuitive animated visual aids are included to help you easily organize even complex concepts.
Difficult concepts are explained simply through high-quality visual materials.

A "Lecture Handbook" is provided so that you can review the lecture content at any time.
The lecture handbook is provided in both web page and PDF formats.

‣ Event Benefits Information

50% discount coupons for all applicants, 100% discount coupons for 30 winners via lucky draw

‣ Event Schedule Information

Application Period: Until midnight, Monday, March 16th

Winner announcement and coupon distribution: Sometime on Tuesday, March 17th

‣ How to apply for the event

Please apply using the Google Form below!

https://link.onebitefe.com/r/3m97g0

⚠ The new course contains the same content as the first part of the 'One Bite-Sized Practical Project: SNS Edition' course.
Please note that the content may overlap for those who have already taken that course.

Among the students, there were more people than expected who wanted to learn core libraries such as Zustand and TanstackQuery,
but wanted to skip the project for now or consider it later.

For those individuals, I have newly organized the content into a separate course so that you can learn exactly the parts you want at an affordable price,
without any pressure.

​

We ask for your great interest and support 🙂
Thank you always. Best regards, Junghwan Lee

Hello, I'm Junghwan Lee.

"React One Bite at a Time (Revised Edition)" has been newly published. 🙌

To celebrate the publication, we are holding a book review event, so we would appreciate your interest.

Quickly participate in the Book Review Event: https://link.onebitefe.com/r/w51kyc

Event Information

Read my new book "React from a Bite-Sized Perspective (Revised Edition)" first and

I am looking for people who can write a review, even if it's a very brief one 👀

We will send the books to the selected participants via courier 📦

Event Schedule Information

< Recruitment >

✔︎ Number of recruits: 10 people

✔︎ Recruitment Period: until midnight, 03.05 (Thu)

✔︎ Activity Period: ~ 03.31(Tue)

< Selection Confirmed >

✔︎ Selection notification email sent: During the morning of 03.06(Fri)

✔︎ Confirmation of selected participants' response: 03.06(Fri) ~ 03.08(Sun)

​

⚠ Caution!

For those who have been selected, on Friday, 03.06,

We plan to ask for your name, phone number, and address (for shipping purposes)

If you do not respond within the selection response period mentioned above, your winning may be canceled.

Activity Guide

After receiving and reading the book,

Please leave a review on online platforms such as blogs, YouTube, or SNS by midnight on Tuesday, 03.31!

Caution! If you do not leave a book review after receiving the book, your participation in future events may be restricted 🥲

Application Link: https://link.onebitefe.com/r/w51kyc

Book Introduction

For more details, please check the YouTube video and the Kyobo Book Centre book introduction page below.

• Introduction Video: https://www.youtube.com/watch?v=X4W0Rj9WMdk

• Kyobo Book Centre: https://product.kyobobook.co.kr/detail/S000219301278

   

Finally, to everyone who has sent so much love to make the publication of this book possible,

I would like to express my sincere gratitude to all of our students!

I will always do my best. Thank you!!

Hello everyone, I'm Winterlood (Lee Jeong-hwan).

Did everyone have a good Lunar New Year?

The Lunar New Year holiday is all over, but...

I've come like a magpie bringing gifts for you all 😂

Lunar New Year Course Review Event Guide

• 50% discount coupon for all participants (Choose 1 from the One Bite series lectures)

• 100% discount coupons provided to 30 people through a lucky draw

• Just verify your course review to complete your participation! (Previously written reviews are also OK)

• Participation: https://link.onebitefe.com/r/4qh6ef

   

Click the image above to go to YouTube (the embed wasn't working ..ㅠ)

If even that doesn't work, please click the link below.

https://youtu.be/WE2QnI0T6Ts

We look forward to your active participation.

I am always grateful, and Happy New Year!

Best regards, Junghwan Lee 🙇🏻‍♂️

🏆 Please participate in the 2025 Hanip Survey

• We will provide a 35% course discount coupon to everyone who participates in the survey,

• Through a raffle, we will provide 100% course discount coupons

Hello, this is Lee Jeong-hwan

To commemorate the end of 2025, we are conducting the Hanip Community Year-End Survey 🏆

* Survey results will be compiled and shared on the cafe by January 9th (Friday)

🔗 Survey Form Link: https://link.onebitefe.com/r/hgy83a

If the above link doesn't work: https://forms.gle/CbQNV244TrXX7T4d8

For those who have completed the survey submission

A very special gift is also prepared 🎁

[ Participation Reward Information ] ‣ 30 winners selected by lottery: 100% discount coupon for 1 course of your choice (including new courses, scheduled to launch April-May 2026) ‣ All participants: 35

[ Participation Rewards ]

‣ 30 people selected by lottery: 100% discount coupon for 1 course of your choice (including new courses, scheduled to launch April-May 2026)

‣ All participants: 35% discount coupon for 1 course of your choice (including new courses, scheduled to launch April-May 2026)

(If you choose a new course, receive a 55% discount coupon, higher than the pre-registration event!)

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[ How to Participate ]

‣ How to participate: Submit survey results

‣ Participation Period: 12.31(Wed) ~ 01.04(Sun) until midnight

‣ Results announcement: Monday, 01.05, during the afternoon

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[ New Course Announcement ]

‣ The topic has not been finalized yet.

‣ We are currently considering topics in CS areas (networks, data structures, etc.).

‣ Scheduled to be released in April-May 2026.

[ Guidance ] ‣ The topic has not been finalized yet. ‣ Currently considering topics in CS areas (networks, data structures, etc...). ‣ Scheduled for release in April-May 2026.

[ Notice of Precautions ]

‣ If you enter your email incorrectly, we may not be able to notify you of winning or deliver your coupon. Please make sure to double-check

‣ Duplicate entries are not allowed. Thank you for your understanding.

🔗 Survey Form Link: https://link.onebitefe.com/r/hgy83a

If the above link doesn't work: https://forms.gle/CbQNV244TrXX7T4d8

The results of this survey will be used as the basis for determining the direction of course production in 2025.

Your responses will be reflected in the actual courses.

Thank you all so much.

- From Jeong-hwan Lee 🙇‍♂

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PS. The survey results will be compiled and shared on the cafe by January 9th (Friday)!

Celebrating the 2025 Inflearn Awards "Bestseller" Win

50% Off: Bite-Sized TypeScript

Hello everyone, this is Lee Jeong-hwan 😀

Bite-Sized TypeScript Course

Selected as "Best Seller" at Inflearn Awards 2025!

- Source: https://inf.run/NbuwA

- Faces have been blurred to protect the portrait rights of the fellow knowledge sharers who received awards together

​

Thank you sincerely for all the love you've shown us over the past year.

We've prepared a massive discount event to show our appreciation for your love and support!

Event Information

We're distributing 50% discount coupons for the Bite-Sized TypeScript course!

(Limited to first 500 people)

You can find discount coupons in the cafe announcement below.

https://link.onebitefe.com/r/45jc3w

Acknowledgments

Thank you for sending so much love that allowed me to receive such a wonderful award at the end of the year

I would like to express my sincere gratitude to all students and readers.

Thanks to all of you, I was able to wrap up this year warmly.

​

I will continuously strive to bring you more good news, useful and enjoyable stories, even during these difficult times.

I'll work hard until the end with the same enthusiasm I had when I started, without wavering. Thank you so much.

​

I sincerely hope you have a warm year-end filled with as much warmth as the love you've shared with us.

I will always support and work hard. Thank you.

​

- From Lee Jeong-hwan

Hello everyone, this is Lee Jeong-hwan 😀

We are pleased to announce the Hanip Community Course Review Event!

For detailed information, please refer to the announcement or image below!

Notice Link: https://link.onebitefe.com/r/5uoyp5

Thank you always. Wishing you a warm and happy end of the year!