How to understand Linux, including openwrt?

Question

linux

I decided to set up a router, but I realized that I did not understand anything. And on a computer with ubuntu, I do everything according to the manuals. I don’t want to stupidly retype text from the Internet into the console, but understand what I’m doing and do without manuals. Advise what to read (I don't know English).
Help with router. Recommend a couple of articles. What I want: firewall, ad cutting, samba. I want the system to be in the built-in memory, and all the programs on the flash drive (if I remember correctly, it is formatted under * 4) + swap.
I also want to set up a network printer (brother).
And another question, what else can be done under openwrt?

Answer 1

I'm afraid it's more complicated than it looks. The human brain is designed this way. that information that is not used often ... stupidly flies nowhere. What is used very often ... settles on the subcortex and becomes intuitive. Logic circuits are built in the brain. Even if the information is overwritten, it is easy to restore it. By template. Therefore, at the initial stage, everything is always done according to the manual. And then by hand. And once again on the manuls. Time passes and manuls are already in my head. There is a creative impulse. The first patterns appear. It is the matter of time. =)