No worries Raykev,
They have quite a few tutorials in the forums, and in the Studiopress resources sections.
Also, there are a lot of tutes available on the net. Some users post their code snippets etc. If I find something that maybe useful to you, I'll post it. :)
Brian Gardner's site has a lot of useful code snippets and tutorials. Although, they are mostly related to, how he customized his personal site.
Some other sites I've stumbled upon:
I'm sure there are loads more available. These are some of the sites that I've been to and remember at the moment.
Hope they are helpful. :)
P.S: Having a test site is a good idea.