It's worth doing, especially if it's free, but if I were paying for it, I'd do a local BMWCCA track event. You have to use your own helmet, but that's only around $250-300 and you don't have to worry about what someone else may have in their hair who wore it before you.
The instruction I got at a CCA track event was much better since there was an instructor with you all the time, in every car. It's much cheaper too.
Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."