You know you want to be able to play just like a rock god, then the biggest thing you have to do is practice, practice, practice. Of course with a guitar.
Set your goal in small steps and then achieve them. Such learn you first notes, then first riff. Learn at least 3 chords for a start.
Pick music and a song that you like because you will be hearing it a lot before you can master it fully. Also be realistic, pick an easy or slow sounding song to start off with. No point being frustrated because you can not play as well as Steve Vai or Eddie Van Halen on you first attempt at a song.
Start learning and play your first song. Listen to how it sounds and copy it. When you are ready, learn another 3 chords and another song. Reach your final goal in small achievable steps.
There is information here on starting to play rock guitar and getting the right equipment. I will have more Rock Guitar tips coming soon so keep checking back for updates.
Drop me a line below if you want to ask, see or suggest something. Go to the contact page to find out how to reach me. Thanks.