Best survey questions to get visitor feedback on SaaS websites?

Hi Hunters, I am looking for suggestions to ask via survey tools. We are exploring both Typeform and Crowdsignal.com. The idea is to get quick feedback from first-time visitors to the www.qinaps.com website. It will help in engagement, direct feedback on the relevancy of the content, and things we do quickly to improve our product for more engagement. Qinaps is a Software as a Service application encouraging content creation and reuse. It's a hybrid between mind-mapping and note-taking. But it's amazing when it comes to collaboration, reusability, and content discovery.