Watch the The G Major Scale online guitar lesson by Jimmy Heffernan from Dobro Handbook

In this video, I'll show you the way that I visualize the fretboard; in particular, what I "see" when I look at the neck in the key of G.

Visualizing the notes of the scales that you'll be playing will really help you improvise much better as it opens up the instrument to you and allows you to run up and down the neck without getting lost, very important for dobro!