CGcookie is the most well known tuorial webiste for Blender : http://cgcookie.com/blender (with the basic tutorial : http://cgcookie.com/blender/cgc-courses/blender-basics-introduction-for-beginners/ ) but for asset creation there's probably some good youtube channel but I don't know enough.
Neal Hirsig's Tutorials are how I learned Blender. Easy, bite-sized videos that go though all the basic commands and settings giving practical examples of each.
As others have mentioned, CG Cookie is a good starting point. There are other tutorial sites as well once you get comfortable with Blender. http://www.blenderguru.com/tutorials/ http://www.cgmasters.net/ https://www.youtube.com/user/CGAstym/videos