You just need to start with real communication with your client, then there will be a good result.
Of course, you need to look for contact with potential users and potential investors. And how this will be done is not so important. You can participate in conferences, you can actively advertise yourself on the Internet. The main thing that was the result!
Conferences and other kind of meetings is a good way to make some deals with other perspective companies and it can strengthen positions of developing project!