I forgot to mention another cool thing to practice.
You should really try soloing over 1 chord vamps. (backing tracks which consist only of 1 chord).
When you do this, you will have the opportunity to modulate and have fun.
Here's an example:
Say you find an Am 1 chord vamp, your options for soloing are:
A Dorian, A Phrygian, A Aeolian, A Locrian
Here's another example for an A major 1 chord vamp:
Your options would be: A Ionian, A Lydian, A Mixolydian
It's great to listen to the different colours of the modes and switch between them - lot's of fun :)
/Dave