i’ve been trying to learn how to texture well for about 4 or 5 months now, and havent got anywhere, then i found this thread by enricoceric called to charge my batteries: http://blenderartists.org/forum/showthread.php?t=120381&highlight=to+charge+my+batteries and there is a great render showing the scratched up, crappy metal the robot has, is there any tutorials anywhere on how to get textures looking this good?
Here is a nice tutorial that can get you started. If you don’t have Photoshop, you can use the GIMP, an open source equivalent.