njdmb, I would suggest that you first determine what kind of Taxidermy you want to do the most. Mammals, Birds, fish, Reptiles, etc. They all have different methods and procedures to each. If you try and teach yourself all of them at once by watching a wide variety of videos your setting your self up for extreme frustration and failure at the get go.
If you are going to do for example Mammals, I would get all the information I could on Mammals and learn that area of Taxidermy first by getting every piece of information you can on that particular area of Taxidermy. Then practice, practice, practice! Once your good at that, then if another area of Taxidermy interests you then start on that and repeat above.
I have seen throughout the years of people starting to get into Taxidermy and they focus on everything at once and get frustrated from overload and quit. Try to keep your training maintainable, and remember have fun with it, even when you get frustrated. Once you get started, you will soon learn real fast why all of us Taxidermists have gray hair, or in some severe cases no hair, LOL.
Good luck and don't be afraid to ask questions.