Insurance sales is extremely difficult to start from scratch. The serious commission money is in high-pressure hard-to-sell life policies (is that something you want to do?). The landscape is changing as well with all sorts of online insurance companies popping up (i.e.
www.esurance.com get a quote, lock it in and print out a certificate in minutes). The only way to do it, IMO, is to buy a 'book of business' from a retiring agent so you've got some sort of baseline to build off of.