Hozzy, I'm in the same boat as you are - a green beginner. I recently had the same questions you do and went to the bookstore and bought a copy of Rock Guitar for Dummies. Don't let the title disuade you from buying it . In the last few nights of reading ,it has opened many doors and answered many questions I have had. I found that it is a very light read and has many tips and some excersices to follow and has a bit of humor mixed in to keep your attention . It has chord tables to follow , a chapter on tab itself and a few famous rock names you can read about . Keep trying, don't quit learning - eventually we'll both be burning up our fretboards.