Recording interviews is like magic. a) It stops you from taking notes in the middle and b) you can play that recording for people.

I wish I could tell you the recipe for figuring out who the target user is for your product and who your users should be, but... there isn't a recipe. It comes down to think really hard and use your judgement to figure out who you're really building this for.

People don't like silence, so they'll keep talking to fill the void.

It's one of the most validating things you can do for a product is go out there and get them to commit to pay you up front.

The most common mistakes are showing people your product- don't show them your product, it's sort of like telling them bout a feature.

You want to learn about what's already in their heads. You want to avoid putting things there.

The most interesting things you learn in an interviews come from the: 'interesting', 'tell me more'