I wrote a blog post (https://blog.nichetester.com/the-assholes-guide-to-product-validation-1e5be4eb730e https://blog.nichetester.com/the-assholes-guide-to-produ

I wrote a blog post (https://blog.nichetester.com/the-assholes-guide-to-product-validation-1e5be4eb730e https://blog.nichetester.com/the-assholes-guide-to-product-v...) and eventually made a web app (https://nichetester.com https://nichetester.com) to step people through a pretty similar process for new ideas.