Second Rule: Know what kind of Angel You need Based on Money, Stage and Industry.
Angels come in all sizes and shapes, i.e. the amounts they will fund, industries they cover, stage of company. In the last few years, VCs have moved away from early stage startup companies asking for anything below $5,000,000. Moreover, successful startups may be able to raise up to $500,000 in private placements. According to the Kauffman Foundation, angel groups (as opposed to individual angels) have stepped into that funding gap between $500,000 and $5,000,000. Angel groups are now funding not only early stage companies but also second-stage companies, leveraged buyouts and spin-offs.You need to determine how much money you need, the stage you are at and the industry you fall within to find the right angel(s).
Individual angels may be more receptive to funding earlier stage companies, especially if lesser amounts are involved. You may likely need to find angel groups if you are looking in the range between $500,000 and $5,000,000. Few individual angels are going to pony up that amount. Be aware that some angel groups are asking companies to pay for the privilege of presenting their plans. Not only is that requirement appalling, but such requirement dictates you know before hand if the group is even worth the effort and their funding history.
Dig around and find out who has presented to the angel groups and send them an e-mail. Make sure you know funding levels, industry preferences and other stated and unstated funding preferences. Ask them if they got any actual investors or good leads or if it was just a colossal waste of time. Like any good survey, ask a good number of folks who have appeared before such groups. Do the same for individual angels.
Also, focus on the fact that angels tend to make regional investments, invest their own money in the game, have more realistic expectations of returns, favor more advisory (non-board) roles and invest at earlier stages. Get realistic and look for money in the right places.