Create splash page with Pop UP Plugin

Where can I get complete, detailed, unambiguous instructions regarding the selection of settings and the choice of parameters in the Pop UP Plugin to create a full page splash page (not a full screen background page) which will allow me to direct the viewer to my home page by pressing a labeled button. I want to use the Pop Over Plugin as I do not yet know how to code much less type a custom .php page or template.

Thank you.