Well I think some people have trouble making signatures and stuff because they do not have the right things to make it with. A brush set can usually make or break your signature (if you are brushing). So here are some things that may be useful for some people.
Photoshop Brushes
deviantART has a huge amount of brushes, where I get all mine
View them by:
Newest or
Popular
You can search what type you want such as Abstract, Grunge, Sparkle, Tech, etc. to narrow down your search.
Fonts
Da Font
1001 Fonts
Tutorials
Tutorial Pod
4c Tutorials
Grey Cobra
Reloaded Studios
Signautre Source
Climb-X
Good Tutuorials
Pixel 2 Life
AK Pro
Game Renders
Gsof
Chaos GFX
Planet Photoshop
Team Photoshop
Photoshop Cafe
Haven FX
Crazy Designs
Eye Wire
My Janee
Tutorialized
Coded FX
Xiode Studios
Renders
GameRenders.com is a great place to find new renders to use.
Search the
Forum for fresh entries either by
Gaming or
Non-Gaming Renders.
You can also search their
Gallery for some previous renders chosen to be placed in there.
Hope that helped, and if you have any links that could maybe help say so and Ill add them in here, maybe some c4d render places cause i dont know any
