I still have a lot of programs on the computer so I assume you mean I delete all of these programs and then do the "Wipe Free Space" right? Again, I'm not great at all with computers.
And yes I do seem to have D: drive as a recovery partition. I honestly don't know what that means though .
Thanks a ton! P.S. I'm not 100% sure I am going to sell the computer so unfortunately I won't be able to test some of this advice right away at least. That's probably frustrating to you guys (sorry).