well i study every day electric guitar...and i'am starting with exercises for alternate picking..legato..and hammer-on..pull-off..but i spend a lot of time in these exercises..(about 2-3 hours a day).because i am playing with many combinations..(first and second finger..second and third..e.t.c)..so i am looking for the basic exercises for alternate picking ,pull-off.legato and hammer-on....the main subject for me is that when you tell me about these exercises:)..i'm gonna be sure that if i am playing just and only these exercises..i wil not have to play and other..so i'am looking for the basic part of my study each day...thanks a lot..sorry for my english..i am from greece..help me please!!!