Help animating my character

I need some help animating my character.
The shirt has odd spots on it where the faces are triangles and the light reflects off of it in a funny way, and the hair goes “patchy” for no reason.
blender isn’t saving my renders either, so I can’t post a picture.

it sounds like you have some faces set to smooth, and others solid, so, select the mesh, and hit the ‘set smooth’ button in edit buttons. at that point, some black lines or patches may appear, due to inward facing normals, so, if it happens, select all in edit mode, and hit ‘ctrl N’ ( recalculate normals outside ). if the mesh is intersecting itself, you may have to do this part manually, using the flip normals button on single faces. or seperate the pieces and do ‘ctrl N’.