The title pretty much says it all. Just looking for some courses that you thought were effective in teaching you how to play blues guitar. I currently have "Blues Guitar Unleashed" and it is a good beginner series and maybe a little beyond beginner, but I am looking for something both better than that and more comprehensive.. I have heard some good things about "Guitar Tricks" and I like the look of their website. Is there anything else anyone here has tried and had good results with.?