I think all lessons have the feature -- all those I looked at have a settings icon at the bottom of the video. Scroll the cursor over the video to reveal the icon which is at the right of the time crawler and sound control icon. The settings icon is a typical settings icon; it looks like a gear cog. Click on it and a "Speed" option is revealed. Click on "Speed" and a list of speed factors is presented for your choosing.
"It takes a lot of devotion and work, or maybe I should say play, because if you love it, that's what it amounts to. I haven't found any shortcuts, and I've been looking for a long time."
-- Chet Atkins
-- Chet Atkins