Online surveys are a quick and incredibly useful tool for gathering all sorts of user feedback. In next to no time you can whip something up using one of the many online survey tools out there and start gathering feedback from real users.
http://www.uxforthemasses.com/online-survey-questions/
You’ll know if you’re building your business in the right direction when you collect feedback from your users consistently. So experiment with the following methods and find the right combination for your business.
https://blog.yesinsights.com/feedback-questions-to-ask-for-growth/