Dumb. Pretty dumb.

First, I often don't get jokes and sarcasm (/j and /s are here for me)
But most importantly, I don't know anything. I don't even know how to start learning any subject. There's so much information out there, and I know basically nothing. I can't even program, which everyone seems to be able to do.

There's so much I'd like to get into, but where do I even start with each thing?
I'll try to list some things. Sorry if they'll sound stupid, I am stupid.:
I'd like to better understand GNU+Linux. Get into networking. Currently that's only partially satisfied via CCNA courses provided by school, but Cisco != networking. Programming. C++ looks like a nice option. Learn Morse code. Currently I am doing that via cracked MorseMania app. Get some understanding in computer security by which I mean pen-testing area, and not by using existing scripts. RF electronics. Wouldn't it be cool to design my own RF filters, upconverters, downconverters, amplifiers, etc.? Antenna modeling. I don't want to remain stuck with a dipole forever. Learn using GNURadio. At least graphically using GRC, but C++ would be useful here. Digital Signal Processing. No idea where to start with that. I'd also love to actually understand various modern digital modulation techniques, not just acknowledge their existence. Math. For almost all of the above (and more) I need some better background in math. It should be easier if I could see the actual real world use cases.

But I have no idea where to start with anything. And lastly, there's the constraints of time. (And my smooth brain, of course.)

And lastly, social anxiety. I am afraid to speak with people my age. Especially women 💀. But, let's be honest, that definitely saved me from embarrassing scenarios a lot of times.