I’m both experienced and know jack shit because there is just too much to learn. I just started using it (1998ish) to make cool looking UIs. Its been my daily driver for 15 years now.

You will never learn it all. Over time you may become more familiar with the terminal or you may not. Doesn’t matter. You do you.

Its pretty easy to test drive. Grab a distros “Live CD” version, put in on a thumb drive, reboot and play around. This wont be persistent. When you’re ready, install it on an external SSD. Play around some more now that your edits will be persistent. You’ll mess up. Take notes. Start again once you’ve hosed your system.