I'm having trouble grasping the grid pattern for scales. I am in Fundamentals 2 working on the major scales lessons. Could someone explain this concept a little more in depth? I know what the grid looks like....so, you use this pattern for any note anywhere on the neck and that is the scale? I feel like I just need some more context to grasp this. And then to play the linear kind of scale....I'm just a little confused with that, too. So either one is playable?

Also, how proficient in scales should I be to move on? Is this something I will just constantly be working at and working into my practice? I have gone through and studied quite deeply the Music Theory Basics course by Christopher. (Awesome lessons, by the way...)

Thanks in advance for any help. I'm determined to get this....