For a small (depending on your definition of small) IT firm, I would personally consider it a waste of time, although education in general is never a waste of time.
My best information for running a small 5-man IT consulting firm came from a guy, John Gilmour, who used to own a bootery (yes, a shoe shop). He published a periodic article in the finance section of a state-wide newspaper and ended up publishing them all as a book ("Small Business Soldier").
He covered (from memory) such good topics like:
- how to deal with the tax man and various other government officials.
- losing the checkbook near month end to keep costs down.
- various ways to save money and increase revenue from a very base level.
- stock issues and how to avoid them.
- firing your bad customers and suppliers.
And, in a very humorous, engaging way which kept my interest. Basically, it was all about taking advantage of good times and surviving bad times and this got me further in business than any of the commerce subjects I did at Uni.
Another good book, by the way, were a couple from John Cleese (of Monty Python fame) called something like "So you think you can sell" and "So you think you're in business" - same humorous engaging manner but more closely aligned to sales, management and accounting information.