Ryan, there is free, open-source software for just about everything you could possibly want to do on a computer. You tell us what you need, and we'll tell you what to get.
Let's do this, and get it right.
Windows 10 - Clean Install - Windows 10 Forums
Follow the instructions to do a custom install, so you can delete all partitions - looks like this:
Your key should be embedded in the BIOS, so don't enter one. If you want to grab it just because, use this to get it:
Showkey - Windows 10 Forums
Okay? Any questions, please ask before you start.