I like what you have done. it works for me. If I were to be picky I would like to see a page I could click to that lists the lessons I've been in, followed by a column with the % progress (monitored by GT), then a column for "done" for me to click if I want to mark it done.

maybe the page could be located under the account section or something like the history or bookmarks tabs.

but remember, I"m just adding comments that are "picky", I really like the progress bar and done button

P.S....
can you guys get some t-shirts made to sell? I'd like the GT pick on the front in the corner of the shirt (like by the shoulder area) and then on the back put D. Showalters saying: "Stay a Fan"
That is what I'd like to buy :) of course in different t-shirt styles/colors

P.S.S... I just realized there are red picks for the lessons you see in a section and the lesson you left off on is red. that is really awesome for reminding me where I've been when I leave for other lessons.