Learn the following groups of scales and you will be able to solo using the entire neck (rather than being stuck to that one blues or pentatonic scale you know):
The 5 positions of Pentatonic and Blues
Major/minor – the 5 patterns
The 7 modes (3-notes-per-string fingerings)
For pdf files of these scales, contact richards@richardsguitarstudio.com.
Nate Richards