How to Make the Flood of Knowledge Your Own

Hello, students, this is Lee Jeong-hwan 😀

Thank you sincerely to everyone who participated in the summer Black Friday sale over the past two days!!

For those disappointed that the summer Black Friday sale ended so quickly and those who found out about it late, we’ve decided to offer a
repeat sale on all One Bite series courses through August 31.

35% Encore Discount Announcement

We’ve prepared a 35% encore discount coupon
so that those who missed the event period can participate as well 🍦

Discount coupon page: https://link.onebitefe.com/r/3rn28s

With this encore discount as well, you can enroll at a discounted price in all courses in the Hanip series
, from the Vibe Coding course to React, TypeScript, Next.js, and even practical projects..

Important Information

The 35% discount coupon is available until 11:59:59 PM on August 31,
and according to Inflearn's policy, once issued, the coupon must be used within 24 hours.

Thank you.

Best regards, Lee Jeong-hwan 🙇🏻‍♂️

Hello, students. This is Lee Jeong-hwan 😀

Are you all getting through the hot summer well?

We’ve prepared an ice-cool discount event, just like ice cream, for all of you who are worn out from the heat 🍦

A Super Cool Summer Black Friday Sale Announcement

To mark the end of August, we’re offering a 50% discount on all Hanip series courses for just two days
.

Discount page: https://link.onebitefe.com/r/7b2lxi

From those just starting to code
to those who want to properly learn React, TypeScript, and Next.js
everyone can take all Onebite series courses at half price.

Important Notes

The 50% discount event is available for only 2 days,
and according to Inflearn's policy, coupons you have issued must be used within 24 hours.

(*Coupons that have expired cannot be reissued)

Hello students, I'm Jeonghwan Lee 😊

The production of the new course "Vibe Coding in Bite-Sized Pieces" has been fully completed, and

It is scheduled to be released on May 12th (Tuesday).

Pre-registration Event Information

‣ Event Benefits Information

50% discount coupons provided to all applicants

30 winners will be selected by lottery to receive a 100% discount coupon

‣ Event Schedule Information

Application Period: Until midnight on Monday, May 11th

Winner announcement and coupon distribution: During the day on Tuesday, May 12th

‣ How to apply for the event

Please apply using the Google Form below!

https://link.onebitefe.com/r/fr4gd7

New Course Introduction

Lecture Introduction Video: https://youtu.be/8aFULNwP5pg

AI is only as great as you are.

Even when using the same tool, the depth of the results varies depending on the user's level of understanding.

Anyone can ask an AI to "make this," but if you don't understand why the code it wrote works or why it doesn't, you will eventually hit a wall.

Over the past six months, I have prepared a new course that combines AI tool usage with the essential core development knowledge required for "vibe coding," all to help you get past that "stuck point."

Only the most essential core development knowledge
cut into bite-sized pieces

Since food that looks good
also tastes good

So that you can easily organize even complex concepts,

It comes with intuitive animated visual aids.

Difficult concepts are explained easily through high-quality visual materials.

We appreciate your great interest 🙂
Thank you always. Sincerely, Jung-hwan Lee

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 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!