Is there a way to automatically unwrap my character? If not, is there a tutorial or something?
Unwrapping is a skill in and of itself. There really is no right or wrong. You have to judge that yourself.
I made a fairly extensive tutorial on it, but here's a quick overview:
- Figure out where to flow of the mesh and plan where to place the seams. Wherever you place a seam, Blender will "cut" the 3D model and try to flatten it. You want to make sure first and foremost that it will be able to split apart into even planes, otherwise you will get major warping issues.
- Open up a UV editor and start placing the seams on the mesh (CtrlE > Mark Seam).
- UV unwrap the model (U > Unwrap) and make sure it unwrapped the way you expected.
- Tweak the seams until you're happy with the result.
After you unwrap a few meshes you'll get the hang of it, and you'll be able to unwrap quickly and cleanly.
You can try using Smart UV project:
Select your model and switch to edit mode (Tab)
Select all (A)
Press U> Smart UV Project.
However, I suggest you look at some tutorials. A search engine should be your friend here, but here are a couple to start you off: