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

該 issue 沒有列出文件文件、測試或進入點；請先盤點空白的佔位頁面，並檢視新使用者如何啟動應用程式。在編輯之前，先定義 v1.0.0 的最低限度指南；當新使用者能夠啟動並開始使用應用程式，且基本問題都得到解答時，即可視為工作完成。

由索引模型根據 Issue 內容生成。