WorkshopLive is a site created by the founders of the National Guitar Workshop that features online guitar lessons with many of the instructors from the National Guitar Workshop series. You can select from several different styles, including Jazz, Classical and Rock, and you can select which teachers you want to learn from.
Each lesson features a video of the instructor and a music area that shows the notes the instructor is playing (either in tab view or standard music notation). You cans switch the views so that if you want to watch the instructor you can maximize the video, or if you want to study the notes in more detail, you can maximize the notes view, or you can view both together. You can also modify the speed of the music so you can slow down passages that are difficult. Additionally, there are several special guests, including B.B. King, Carlos Santana and Chick Corea. Lessons are available for keyboard, too, with lessons for drums, bass and wind instruments coming soon.
WorkshopLive offers a free sample lesson, as well as a full tour of the features that they provide. The pricing is quite reasonable and is available in monthly ($29.95), quarterly ($59.95), or yearly ($199.95) subscriptions. When you consider that the cost of a single lesson from a music store costs around $20 for a half hour lesson, then the pricing looks even better. I think that they’ve done a great job in making the lessons truly feel interactive and interesting, and I think this is the best online guitar teaching site I’ve seen yet.