I hooked up with 2 other co-founders friends that i use to work with.
We worked in our spare-time to get out a really early beta, once we had that and some users I started asking around and networking to find investors.
Took around 3-4 weeks and dozens of meetings to find the right one. Almost took the first offer we got which was a quarter of what we settled for.
Although I used Angel List and F6S, in the end it was a personal intro from a old freelance client that got us the money