Who is your customer?

• Can't understand what problem you are solving until knowing who you are solving it for;
• Start with a niche market. You are going to be lost because you don't know who you should talk to:
  • Frequency - How often do they have the problem?
  • How intense is the problem?
  • Are they willing to pay? Almost better to start by charging money up front. This is a good way to prove PMF;
  • How easy are they to find? Don't expect them to find you.

Ref:

• Michael Seibel - Building Product