Bite-Sized TypeScript
Go beyond syntax to understand the principles and concepts—if TypeScript still feels confusing no matter how much you study, it's time to learn it properly! We will turn you into a TypeScript Wizard🧙🏻♀️.
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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.
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
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 🏆
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)(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-uA4With 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.
We look forward to your active participation.
I am always grateful, and Happy New Year!
🏆 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: 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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‣ 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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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!
