I recommend checking out incubators. They are popping up all over the place.
Also check out angel investor groups. You can find a list at teh Angel Capital Association.
Be clear on what stage you are at - many people will call themselves angels but they really want to look at only de-risked investments. So to avoid wasting your time, figure out if you are seed, early stage, series A etc. and communicate that when contacting groups or individuals.