First suggestion: commit to using Ubuntu for a set period of time. Could be a week, could be 2 hours. When you encounter issues, force yourself to stay on Ubuntu.

What you'll find is that at first, errors will seem like gibberish, then you'll do some snooping online, and find out how to access some log files or poke around your loaded modules. You'll slowly learn commands and what they do.

Eventually, something will click, ie; "wait a minute, I just checked to see which kernel modules are loaded, and I'm missing one that was mentioned in my error, that must mean I need to load that module at boot." You load that module, reboot, try your command again, and bam, everything works. You've learned how to troubleshoot an issue.

The best way to learn Linux is to immerse yourself in it. You can't efficiently learn German if, every time you hear a phrase you don't understand, you switch back to English, right?