@Robert Boulos very good questions. Let's come to #1 question . Yes it's a good idea. Because through this way you can understand your audience needs, preferences etc. You can also build credibility. But you also have to remember that the success of such efforts depends on some factors like industry, goal, budget etc. Now let's come to #2 question . Google ads is the most precious tool for validating interest in an idea. For idea validation you need to have a proper landing page or website, then setup Google ads campaign with optimized target audience, proper budgeting & keywords researched, run and analyse the campaign. The goal shouldn't be generating immediate sales but to validate enough interest in your concept . I hope you got your answers. If you want to know further more you may ask.