You'll find a variety to templates, parts, snippets, CSS, and other things providing actual code or examples of how I've customized Obsidian for my specific needs. The goal here 2 parts: 1) if you don't know markdown, templater, dataview, etc, you should be able to copy/paste these into your notes without much fuss if they're exactly what you need. 2) If you know enough about those plugins and languages that make Obsidian do more things, you can adapt what I provide to suit your purpose, modifying and changing to your hearts desire.
When you see a "2.0" in the subfolder readmes, that denotes things I'm implementing for the revised version of my vault. I'm using the ITS theme. Quite a bit is changing as I work to improve workflows, trim features, functionality, templates, etc. that I found little actual value in or didn't use enough to justify the resources. A big one is the erasure of my thousands of "book" notes since I was basically duplicating what I was already doing in Calibre. If I do have annotations and such in an ebooks, I can use a Calibre plugin to create specific notes. However, I DO NOT need to know all the books I've read and movies/shows I've watched so immediately that I need to have vault notes for each and every one of them just so I can see a pretty card view of them all. I thought it would be valuable, I really did, but it wasn't. As part of the 2.0 revision, I now have a much higher standard for what notes exist in my vault, and my "content justification reviews" are now ruthless.