I would like to start an Appsumo like web portal which will provide ridiculously cheap deals on instruments and lab kits to a bunch of people in a particular niche group. Say for the people who are in universities and Govt. organizations doing physics and astronomy. However, I have no technical background(coding) for launching a good landing page which can collect email address from these niche groups. Also I have no business experience how to collect enough numbers of email address to start with. So here are my questions.

Q1. How should I set up a landing page to collect required information.Should I go with any landing page template off the shelf to test the idea or hire a freelance developer to do it?

Q2. How do I go out and collect large number of email addresses from a particular niche group?