Install WordPress Over Old Website

Hi! I have a regular website that I would like to convert completely to a wordpress site. The pages on the website are static, but I have a wordpress blog in the site already. (The blog is not affecting any of the static pages). What is the best way to convert all of the static pages to wordpress — while keeping the current content of the blog? I don’t care about theme and will change that completely. Also, I want to redo all of the static pages. Any suggestions would be really appreciated!

Thanks!