Okay, now I am interested into bringing my cakes into another level.
Where can I get some good tutorials, templates, books, etc.

I'm not sure about the books. But there is a template gallery on here that has some great idea's. You might look up the work that Doug has done on here. He makes some awesome 3D designs for people. And he is so nice! If you need help, he will just draw make a 3D drawing just for YOU!

So if you want to talk to him and find out how he learned - you should PM him.

Check out this sticky that Rylan put together. It is a wealth of information on lots of different topics:

http://www.cakecentral.com/cake-decorating-ftopict-654103.html