what is cse485_tlu_ebook fr?

This repository is a self study ebook for a university course called CSE485, covering backend web programming with PHP and the Laravel framework. It is written for students at TLU, a university, taking a Web Technology or Backend Programming class, and it is in Vietnamese. The material is organized into an ebook folder containing 12 sessions of theory and hands on practice built around one running example project called MiniShop, along with 12 worksheets that each take at least 45 minutes to complete, split between in class work and follow up homework. There is also a separate project guide covering sessions 13 through 15, meant for group work. The final worksheet asks students to build their own Laravel admin panel with two related database tables connected through belongsTo and hasMany relationships, with full create, read, update, and delete support for both tables. The repository also includes a canonical dataset file and a grading contract document, which appear to prepare the course for automated grading, and notes that the total inventory value across eight core sample products equals a specific fixed number used for checking answers. The README is explicit that this repository holds the teaching guide and worksheet instructions only, not a finished solution meant to be cloned and submitted as is. Students are expected to write their own code for each worksheet, keep it in their own separate GitHub repository, and record a screen capture video of their work using OBS with their face visible on camera. The worksheets are meant to be done in order, since the output of an earlier worksheet gets reused as the starting point for the next one. To begin, the README points students to the ebook's own README for a table of contents of all sessions, to the worksheets folder's README for the full sequence of 12 worksheets, and to an introduction document. Beyond this structure and the homework requirements, the README does not describe any code, installation steps, or technical dependencies, since it is course material rather than a runnable application.