Concept and CG Artist Neil Blevins has created an excellent educational page covering everything from art philosophies, to tips, techniques and process break down. Click the image below to be taken to his CG educational page
I highly suggest you check out these articles:
Go to School, or Learn From Home?
Warning: The Tool May Dictate The Design
Analyzing The Artistic Style Of Your Influences
If you like what you’ve read, you can Subscribe to his Youtube Channel and purchase tutorials from his Gumroad page