Where can I learn to create custom gaming graphics for my website?

Hello everyone I was browsing the forums and I saw that you guys had an active Photoshop section so I decided to post this thread about a problem that I am having. I have been trying to design my own website from a template now and it has gone well. The only problem with this is that my website doesn't really look like what im discussing which in this case is Wow. I want to include my own custom made graphics in each post, a logo for myself, and a cool background but I have no idea where to get started. To be honest I am a complete Photoshop noob and have no idea where to start learning. I want to learn all of this relatively quickly as I am on a dead line. I am a quick learner and like relatively fast paced videos. If you guys can point me to some resources I would be very grateful. Thank you