Hi, so I have been wanting to start hacking for a long time and have finally actually begun learning with Linux. I have already fully done the overthewire bandit course (apart from the git tasks), done a few picoCTF tasks and am currently reading the Linux journey Grasshopper. While I have no illusions about my skills, I think they are decentish enough to relax on them a bit and put more pressure on other spheres. I realise that networking is also a big part of learning to penetration test and to do CTFs, but I do not have any Idea on how I find resources for them.

I already know that HackTheBox and TryHackMe are excellent resources, but I do not have the money to pay for them. What I would love is something like overthewire courses, although I can manage some theory. In what I don't see any point doing is watching something like the Ethical hacking in 15h guide by cyber mentor, since after the 15h I will already forget what was said at the beginning and it in general will just not register correctly in my brain. This is why I would like a place I can learn and a place I can apply/use the networking skills with specific challenges (I have nothing against them both being one website).

Thank you for the help.