Gingrich Library: Your Success Is Why We're Here!
Doing some initial "poking around" can help you focus your ideas or even explore the viability of them. Google and Youtube can help you discover issues surrounding your basic idea for your business. For example, do you know how solar panels are made or how panels can be installed as a Do It Yourself project? What competitors might exist for a recycling/upcycling business (think Etsy)? What bars are located in your target area? Are there bars targeting specific populations? What do you need to stream a fitness class?
Here is a helpful guide that describes ways to montior competitors.
https://www.liveplan.com/blog/why-do-you-need-to-know-your-competition/