Tip 1: Better to be in a lower tune than a given song than a higher tune because its easier to adjust
Tip 2: Learn to directly assess notes on your fret board in your current tuning like
Tip 3: Rely less on open strings to help accommodate different tunings. Learn the seven patterns on the neck
Tip 4: Practicing playing your guitar without looking. This stacks on top of all the other tips
Tip 5: Relying on pattern 1 scale.