You don't need to install anything. it's just loose file that you can place anywhere and use.
Just download from the download page and extract it somewhere.
Usage is just like on Linux, so if you are already a user on Linux then there should no reason to re-learn anything. Just open up a CMD window and type your rclone commands - or mount if you prefer to tie it into the OS.
Aside from a few minor quirks in how how Windows deals with path names compared to Linux, and some very minor differences in the mount endpoint, it's the same program and works the same on all platforms (which is pretty neat).