If you haven't done so already, you should join your local NAIFA association and sign up for an LUTC class. The knowledge you get networking with other agents there can't be bought.

If you want to dive in whole-hog, you could try Allstate. They are looking for agents with financial experience, so you might be an attractive candidate.

Check these out:

http://www.mdrtpowercenter.org/

http://www.nationalunderwriter.com/nucatalog/

It's not a lead source, but just some oldtimer advice that I got from an oldtimer when I started. Don't wait until you have the perfect spiel and know everything there is to know. The worst sales line used consistently is far better than a great sales line never used. Ask every person you talk to, &...

Starting out in this business is hard work, don't let anybody tell you otherwise. It's really hard work. But if you're self motivated and have a decent personality, you can make a good living and have fun doing it (once you get things up and running) Work hard and don't try just one thing, you need ...