I am going to write my own WordPress Plugin (from scratch).

I am wondering if anyone here has had any experience doing this and if they can offer any suggestions.

I have been looking for some sort of comprehensive list of all the "hooks", "Filters" and "actions" and what they are used for.

What do you actually want to do? There are quite some Wordpress plugins for Zenphoto integration, especially Zenpotopress you might look at.. For everything else visit our documentation and the Wordpress Codex.