I need to rplace WP site with new one

I have a customized WP site which someone built for me 3 years ago and I want to make a fresh start. with a brand new WP theme and content, but want to keep the URL. I have absolutely no idea where to begin. Please help.

You’ll have to do two things:

  1. Delete all the files

  2. Delete the database

Then you can reinstall (I would suggest our one-click installer if what I said before sounded weird and newfangled)