I wont be much of a teacher but I do suggest trying out the free tutorials (dog and franky) here on simply maya. They're a good start to get the basic idea of how to bring a concept drawing to 3d. From there you can practice and learn more with other tutorials. I wish you luck on finding someone to teach you. Also glad to see you back here and with a better attitude. Everyone here is always willing to help out as long as you are willing to be helped.