Learn how to run a business, beekeeping is easy. Supposedly you already know something about that and can learn the rest. But, if you intend to go into the business of beekeeping learn about business. There are plenty of schools around which teach basic bookkeeping and accounting and taxes and etc.
When oine moves from small scalle to sideline to commercial not only is it the number of colonies, it's how much one is willing to workand whether one knows what is best to do at any one time.
Commercial Beekeeping is a long game. There are few instantaneous returns. If you aren't in it for the long haul, willing to suffer through the lean years then you'd better find something else to do.
"Many are able, few are willing."