As Skrangsta said. You can buy joints, gradients, and other items in the torishop that have a certian color. Or you can go on Market Item forum and buy for cheaper.
When it comes to textures your going to have to learn from the template given to show you how it will look on your Tori.
Head making gets easy when you know how it might turn out once you put it on. Once you figure that out the rest will be easy.
Head Template: