my problem is i know how to make diatonic scales,pentatonic and a lot of kinds of scales but i dont know if i have to learn every single key.i've been trying to learn every diatonic scale i've only got c,g,d,a and e,i'm trying to follow the circle of fifths but it is so hard to memorize everything ,and also do i have to know what note is every single fret i know how to find but i can't look and just have it in my mind especially from the 7 fret to 12 i just can't remember them,can anybody tell me a good way to learn them i would be thankful if you give me an advice about it