John Tuggle, founder and teacher at Learning Guitar Now, has a number of really good blues guitar lessons on his site. In particular, he has some great slide guitar lessons as well as Allman Brothers-style lessons.
Up until recently, the only way to get John’s premium lessons was to purchase a download or a DVD of the lesson. However, John has recently added an All Access Pass subscription option for his lessons for as low as $12.50/month. That is, you can get access to all of John’s lessons for one monthly payment.
While I don’t know John personally, I’ve had numerous interactions with him online and have reviewed his lessons in the past, and I’ve always had a positive experience dealing with him. I’m glad to see him add even more ways to get his lessons.