here;s al ink how to do it
https://www.howtogeek.com/214571/how-to-dual-boot-linux-on-your-pc/
you will need to make a partition of about 100 gig for linux- you can go as low as 30 gig or so if you want, but I’d recommend around at least 100 to make room for accumulating files and such if you have that much to spare
Thanks!