Education!  

I had a lot of learning books over all those years but some i sold after not useing them anymore. I still have a good book for jazz improvaisation written by the german jazz rock guitarist Michael Sagmeister called Jazz Guitar, very good one i learned much from it, this book also contains a CD with very good jam tracks on it. Also a good one was from Peter Fischer called Rock Guitar Secrets, he´s also german and studied at the GTI, he brought out a lot of books. The other books i had was more into blues guitar playing. Not to forget another very good book worth to mention was Improvising Rock Guitar from Pat Thrall i bought this one in 1989 didn´t get it here in germany had to order it from the states.