Yeah that’s the biggest cure for “learning something and not knowing why”. Instead of just reading to read, try doing things, and when you have a problem or question look it up.
Want to install multiple programs at once? Google it. Want to search for a program, but it spits out 700 versions? Google how to filter outputs in the command line.
Unless you just really like reading dry ass documentation then you kinda just have to do it. And when you run into an issue then figure out the fix.