Cybersecurity/Pentesting lessons

Hi, I'm Simon and I'm interested in having one-to-one lessons about penetration testing and bug bounty hunting. At the moment, I have very little knowledge about the subject. I have watched many videos about the subject, and I quite understand them, but the problem is that I don't understand what's behind what I'm taught. For instance, I can replicate a SQLi by copying some commands used by other people but I don't understand how SQL databases work and what injections really are. Another example is understanding what DNS cache poisoning is: I need the background to understand this networking concepts. So, my question was: can we do a personalized training with the goal of teaching me: - Networking skills necessary to understand and not only launch attacks - Databases knowledge - Kali Linux knowledge - Understanding web applications: how they work, which tools they use, how these tools work. - Programming knowledge necessary to penetration testing. - Understanding requests ecc. - All the other theory needed - Finally, the various attacks, how they are performed, ecc. In other words, I'd like to learn penetration testing starting from the very basic and the skills, so that I can become an autonomous penetration tester at the end and not only someone who's copying other people's commands. My only little "real" knowledge is: I know what a LAN is, a WAN, that a DNS is used to associate a domain to an IP address, I know what is an IP adress and a URL, I've understood file upload vulnerabilities and what a proxy is but that is was I was talking about: I understand some concepts but I still don't understand the basics behind. So that's why I think I need to refresh every concept from the beginning. I understand this training will take a lot of time, especially because I would like to start from the theory, the basics. I would like 1h sessions every week possibly fixed at Wednesday from 15.00 to 16.00 Italy time. Please also tell me your experience and certifications in the field. Thank you very much, Simon