May 11, 2026
I have started adding appendix sections that will cover VLM (Vision Language Model) and its extended fields.
April 5, 2026
I have added three sections that introduce Prompt Engineering, Context Engineering, and Harness Engineering, and explain how to use these three methods in combination.
March 31, 2026
We have completed the verification of the second edition content and have begun posting the second edition lecture videos. We will change the posting order and release random lessons from time to time.
March 12, 2026
[Full Revision (2nd Edition)] posting has begun. We will start releasing the 2nd edition from Section 21 through to the final section, and then proceed to post Section 1 through Section 20. (Change: We will continue the 2nd edition revisions randomly, regardless of the numerical order.)
February 25, 2026
[Commencing Revision of All Course Content] While maintaining the overall structure of the course, I intend to change each lesson to deliver information in a more dynamic yet concise manner. The existing lessons had drawbacks, such as inconsistent lecture durations and depths of explanation, as well as the use of static presentation materials. To address these issues, I have carried out a comprehensive reorganization and will supplement or replace lessons according to this new format. However, if you need the previous in-depth lecture videos, please let me know, and I will provide them as reference materials.
January 8, 2026
Previously, each lesson was numbered using a chapter-section-paragraph system, which differed from the section numbers and caused some confusion. To make the table of contents easier to understand, I have changed the numbering to link directly with the section numbers (e.g., the first lesson of the first section is now Lesson 1-1). However, please understand that updating the slide numbers within each lesson or the lesson numbers on individual attachments may take considerable time.
December 10, 2025
I have added Beginner, Intermediate, and Advanced sections covering the topic "Mastering Tokenization for LLMs."
September 27, 2025
The curriculum for "Section 17. Deep Dive into the Entire LLM Development Process" and "Section 18. Hands-on LLM Development Process (Python + Google Colab)" has been significantly reinforced and reorganized. I am currently preparing the lecture content to align with the new curriculum.
September 18, 2025
I have added the precautions to the detailed introduction page.
I have revised the table of contents for "Section 10. 'Transformer Architecture' Practice". I am currently preparing the lecture content according to the new table of contents.
"Section 16. Understanding the Entire LLM Creation Process" table of contents has been revised. Accordingly, the existing lectures have been deleted, and new lecture content is being prepared to match the new table of contents.
September 1, 2025
I have categorized all lessons into [Basic], [Advanced], and [Practice] and added corresponding prefixes. Since the existing [Supplementary] lessons fall under [Advanced], I have labeled them with the '[Advanced]' prefix.
To reduce confusion and make the learning process easier to follow, all sections have been divided into General Sections (sections containing [Basic] or [Advanced] lessons), Advanced Sections (sections containing only [Advanced] lessons), and Practice Sections (sections containing only [Practice] lessons).
By reducing the potential for confusion in this way, all classes that had been set to private on August 22, 2025, have been made public again.
August 31, 2025
The practice table of contents for Sections 1–10 has been released. The content will be made public over time in the future.
The table of contents for the [Supplementary] and [Advanced] lessons in Sections 1–10 has been made public again. This is to help students understand the connection with the practice curriculum.
August 22, 2025
I have changed the unfinished lessons within the [Advanced] and [Supplementary] courses to private. I plan to release them section by section as they are completed. Please understand that this measure was taken to reduce confusion for students.
August 17, 2025
I am currently adding advanced course lessons and splitting lessons with long runtimes. As a result, the section numbers in the course materials may differ from the section numbers shown in the table of contents.