Lots of tutorials, there is a ton of documentation in the community – created wiki.
http://thingsthataresmart.wiki/index.php?title=CoRE
There’s also a peer assistance thread where you can ask for help if you get stuck on anything. People there will be glad to help you whether your question is basic or advanced. In your case, I’d go directly to the peer assistance thread since you’ve already looked at some of the support materials.