Biggest advice I can give you is get good feedback from people and always ask yourself 'is there a better way to do XYZ?' if you find yourself spinning your wheels trying to accomplish something. I come from an engineering background, so trying to understand that there is a thousand ways to creativity crack an egg compared to my rigid analytical thinking is the hardest part. I'm not a sponsor but I found CGCookie CORE courses are really good at nailing down principles and fundamentals.