Decide what method you wish to use for installation.
Popular beginner distributions
Parrot Home edition * see comment
any of the Ubuntu family
MX-AHS [ best for machines under 3 yrs old]
Parrot home edition is the daily workhorse of the Parrot family, the pentesting tools are already in the software manager. There are also 3 other builds, Parot-sec which is similar to Kali [all the same tools] Parrot-architect for experienced users only. And Hack the box, a specialist distribution built for Hack the box [HackTheBox is a platform that offers hacking experiences for individuals, businesses, and universities to improve their cybersecurity capabilities] these 3 are definitely not for the beginner.