His videos consist of two kind of lessons – techniques, and individual songs. The number of videos he has made is huge, and those that I have watched are entertaining, and pretty easy to follow. He doesn’t oversimplify the songs – these are fairly authentic sounding arrangements – but he goes through both the fingering and pick/strum patterns in good detail. So learning a new song may take some effort, depending on your ability, but you have everything there that you need.
There are quite a few guys out there doing this kind of thing, but I often find them almost embarassing to watch, with great guitar, but poor presentation skills. However, I find Justin’s videos quite watchable and entertaining – he is probably one of the most cheerful and animated online teachers I have seen. It is clear he loves doing what he does, and that comes over in the videos, which are presented confidently.
Also, unlike some online guitar lessons, which stop just as you get to the good bit, Justin’s videos are complete, and free. He relies on donations from those who find his stuff useful, and also uses the sites to promote DVD and Songbook sales.
Check him out.