Watch the Angus Young online guitar lesson by TrueFire from Play Rock Guitar 6: Soloing Approaches
Angus Young - Lesson Overview is a video guitar lesson presented by Jeff McErlain and is sourced from Kings of Tone.
Angus is pretty classic rock and roll in his approach by using the major and minor pentatonic scales. I highly recommend that you learn both of these scales in one position and see how they overlap each other. By seeing the relationship in each position you can really see how the scales work and how they can be mixed. I cannot stress this enough! Learn all the positions!