Developing my survey and getting responses?

I developed a short survey to understand how people think about creating a digital business or product, using their knowledge and skills. It has to be short and straight to the point.
1) I need to check if the survey I created will reflect the idea research I'm looking for.
2) Where I can post it online to get replies (I already shared it with my network and friends and intending to run a Facebook Ad). Are there any other options?