When I was 20 I bought my first car....brand new Toyota Celica GTS -- and it was a standard.
Yep, I bought a brand new car without actually knowing how to drive it, I guess I was determined
I think it'll probably be easier to learn on something other than the Boxster, one that's more forgiving, and you won't have to worry about burning out the Boxster clutch
-Juliette