Hello and Welcome RollingJayHawk.
Best to take your time and look around the site and get familiar with it. There is so much here, that can take a while.
This site is about making available books that are PD. That means they are in the Public Domain. That means that nobody or company currently has a copyright, so they can be put up here by volunteers for people like myself and yourself to enjoy. They come from volunteers collections, which is why the quality is not always perfect .
So that limits us to the 'Golden Age' and older, up to about 1964.
So, many well-known characters can't appear here since they are still in copyright.
So no Marvel/Atlas or DC books and so on.
Right at the top of the page - far top left - there is a search box.
If you are searching for, say, Green Hornet, put that in there and see what you find.
So, welcome, dive in, enjoy! Read the threads, post!
cheers!