I would start first and foremost with mastering analytics. All other strategies will fall into place when you have accurate data to measure your impact.
If there is only one website you ever visit to learn marketing it should be Occams Razor by Avinash Kaushik.
http://www.kaushik.net/avinash/
If you want the fundamentals, read some of Dan Kennedy's books like The Ultimate Marketing Plan.
Look through craigslist or other forums, find someone who is willing o take you as a tehnical co-founder. Learn it from someone who is doing it now...will be really valuable. If you are in bay area, you can catch such people in hacker dojo.