Clay B had made some nice instctions stuff here in the form. There are some good books out there and all will work for a start. As you do more you will try new things and find new ways to help make what you like. Making what you like is the great thing about leather. The one thing I can give you that will help the most is use a good sharp swivle knife and be shere to keep it sharp. the more you use it the better you will get. I my self have cut up a cow side or two just geting better with the knife.
Most of all have fun and I hope you enjoy your self.
Russell