It seems to be fairly complex, looking for a good introduction and overview with real examples if possible.
The best way to learn is to go to industry events put on by both angel and VC forums. For example, in the SF Bay Area this company regularly sponsors events to understand the space https://sv.tie.org/initiative/tie-angels. You can also check out SARTA in the Sacramento region.
If you're looking to actually get involved in raising money that's a different question.