If you are new to Windows 10 then it’s time to make the first steps to have one free copy for 1 year, after that you need to buy a license key (Isn’t expensive, so from our side it’s worth).
What you need to download and install Windows 10?
A good internet connection (internet service provider fees may apply).
A blank USB or DVD (and DVD burner) with at least 4 GB of space if you want to create media.
Sufficient data storage available on a computer, USB or external drive for the download.
A Windows product key (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx) – Windows 7, 8 genuine version
(Link contain Windows 10 Home and Pro edition)