This lesson deals with phrasing your solos, adding dynamics just like you would if you were speaking a sentence to someone. No one (interesting anyways!) speaks in monotone, without speeding up from time to time, adding slight pauses, choosing different words or putting emphasis in different places right? Just as those are all great ways to add character to your voice, using similar techniques will really help your guitar solos sound more natural and interesting.
Another great place to start before hitting this lesson is the Essential Techniques series. That will teach you some of the tools Colin references in this lesson like hammer ons, pull offs, sliding, string stretching, vibrato and more.
Settle in – this one is nearly 50 minutes, but you can come back to it if you need to.