Sounds like you have it all in hand! I really didn’t “get it” when I first got on, but once I got the “Pin It” button and started playing I fell in love with it! Way better than regular bookmarks for me, since it’s so visual.
The best part is that once you start following people, then the home page will show you the things from people you follow (when you’re logged in) instead of everything on the system so it’s like a Pinterest customized just for you!
Also, if you want to follow someone but only follow their recipes and quilting boards, for example, and not, say, their home improvement board (just examples) you can do that, too. I love it. Glad you’re on there! 
~Angela~