Are the Mel bay theory books worth going through all the way. So far im on book two and i wonder if i should keep going onto seven. Will these books be of any use for someone who wants to eventually learn blues/rock guitar
Nothing you learn will take away from anything you knew before it, as long as you actually understand what came before. I say learn as much as you possibly can, it will never do anything but help
R.I.P. My Signature. Lost to us in the great Signature Massacre of 2014.

Quote by Master Foo
“A man who mistakes secrets for knowledge is like a man who, seeking light, hugs a candle so closely that he smothers it and burns his hand.”

My piano teacher many years ago used those same books to teach me theory. They are very helpful IMO.
Quote by Geldin
Junior's usually at least a little terse, but he knows his stuff. I've always read his posts in a grouchy grandfather voice, a grouchy grandfather with a huge stiffy for alternate picking.
Besides that, he's right this time. As usual.