Dear Sir / Mam,

I am currently going through Guitar Fundamentals 2 course and there are scales for each notes both major and minor. My question is : Is it necessary to learn all the open style scales for each notes or I can just remember the notes on each fret and on each strings. Will learning the concept behind the scales should be sufficient? Though Grid style are easy to learn and remember or do I have to learn the open style scales as well. Please advise. Many Thanks !!!!