ALTHOO>>...... one thing i would say,whilst kowalskis view is SPOT ON there is also a major issue of, cock block.. u open a 2 set its only so long b4 u fail (IF YOU DONT SPLIT THE SET), and without a wing its difficult SO

a lot of mysterys stuff on SETS rather than concepts is necessary. Ur best learning it all so u can puck and choose what u need and dont. altho sayin that i never really STUDY anythin rather than glance for usefull bits