First you need an editor vscode or pycharm
Then, don't be stupid and rush to read the code.
First check to see if there are documents and user manuals. Usually there is a quick_start.md file or other .md files.
Then, don’t rush to read the code, read the comments of the code first.
For example, I want to find the code for integrating natural segments from here . Don't try to search files one by one. Of course, you may be able to find it, but it will waste a little time. The quick method should be ctrl+shift+f, or your editor. Use the search function to search for the words "natural paragraph". Generally, excellent code will have detailed comments. If not, then look for it slowly.