The Big book of Blues is one of TF's older courses. There are no separate Jam Tracks that I am aware of. What you do is use the little looper buttons under the video. There is a start arrow, a stop arrow and a loop arrow/circle. Use these to set a jam loop going then work over top of the video.
Sorry carminemarotta but that's the way this one seems to work.
"I once played notes so fast that light emanated from the strings whereupon, I saw God.... who then told me to relax and start playing music."
"I don't want to think about how I am doing it because that just makes it harder." Steve Howe
"You know, once you've had that guitar up so loud on the stage, where you can lean back and volume will stop you from falling backward, that's a hard drug to kick." David Gilmour
Truefire Science Officer (dabgonit....where's my blue shirt!)