Network, Network, Network.
If you're not on it yet, create a LinkedIn profile ASAP. Use LinkedIn to keep track of connections you are picking up, and find hidden connections within your personal network. It will help you get introductions to advisers, investors, and employees.
Second, get out there. If you're in SV, you can't throw a stone without hitting another investor, or entrepreneur, so get out there, and start introducing yourself to people. This is a great way to practice your elevator pitch as well.
Third, start going to events. See if you can't find some in your specific industry, but if you can't don't worry. Start networking with other entrepreneurs, it doesn't matter if they are in your industry as not, they might know people that are. Spread out your social network like roots on a tree, and you are bounce to pick up some beneficial connections.
Another great thing to do is to go to conferences, and trade shows. These are great for picking up industry specific connections that can be helpful to you. Hanging around a university department can also get you a foot in the door with someone that has industry experience.