It depends on a lot of things. This is a pretty broad question with lots of pieces. Rob Walling has a great course on Udemy on The Startup's Guide to Virtual Assistants. The course costs $99 and it's more focused on VA work than straight dev / coding but it touches on both. I took it and it was w...
High net-worth individuals familiar with the industry or credit cards. Visa can make an amazing investor, just be sure to ask for money when you don’t need it.
A few thoughts. 1) Get a diverse group (geo + backgrounds) to use it. 2) Invite people to use your product in person (on their laptops), 3) Measure the impact using www.survey.io – iterate and fix all the user flows.
You can start by personally emailing them and saying thanks. Doing something public without their permission isn’t cool. I send Direct Messages on Twitter, emails, all day thanking people.
Listen, don’t tell. Conduct it on their computer. Fix the issues after each test .. iterate like mad, especially when you’re small / trying to figure it out.