Getting Started in Hacking

Learning by Practice

https://tryhackme.com/

Tryhackme is a platform with virtual machines that need to be solved through walkthroughs, which is very good for beginners and normal CTFs where you self must hack into the machines.

https://www.root-me.org/

Rootme is another page for online hosted virtual machines to hack.

https://www.vulnhub.com/

Vulnhub has machines to download and then to hack

https://www.hackthebox.eu/ https://academy.hackthebox.eu/catalogue

Hackthebox has online machines to hack, but there are very limited in the free version.

Recently the launched their academy, but it is a bit more expensive than for example tryhackme and has less.

https://hack.me/

This site seems to be a community platform

https://www.hacker101.com/

free site with videos and CTFs

https://crackmes.one/

This site has a lot of binaries for forensic learning.

https://www.hackthissite.org/missions/basic/

https://attackdefense.com/