Update Docs

**Is your feature request related to a problem? Please describe.**
Lots of pages on the docs are just empty placeholders and is not very helpful.

**Describe the solution you'd like**
We need to update the docs to provide more information. I'm not sure at this time what the "minimum" would be for v1.0.0, but it needs to be enough for a new user to be able to launch the application and start using without questions.

**Describe alternatives you've considered**
None

**Additional context**
None

The issue names no documentation files, tests, or entry points; start by inventorying the empty placeholder pages and reviewing how a new user launches the application. Define the minimum v1.0.0 guidance before editing, and consider the work done when a new user can launch and begin using the application without unanswered basic questions.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.