Mark Wallace has a really great interactive chart on his site that helps beginning photographers figure out the settings on their camera. Basically it's a PDF withs links to really useful photography video tutorials.
You could try learn your camera's manual by reading it, just be aware that you may actually die of boredom. So what is the fast way to learn a camera manual? Put it near your toilet! That's right leave it near your toilet and you will pick up a thing or two every time you take care of business. When there is nothing to read your camera's manual will save you. You'll learn all about the DSLR you own and don't know how to use.