Excellent piece of kit Nick-
Doing the course will, if nothing else, add credibility to your status as a photographer in the eyes of the minions and nerds that you may wish to sell your pics to.
Another idea for some quick cash and als as a reputation booster -
Hold an exhibition (does your local library have such facilities? Check out likely venues as many only charge a percentage of sales as a fee for the use)
I did this some years back to launch my new business in Cambridge and it worked wonders -
Best of all I additionally made over a grand in a week from sales, and I didn't tell the tax man either!