Make a list of confusing things. Carve out some time every day to explore and practice on confusing things. Maybe an hour, or whatever time you can devote to this. Queue them up, like a reading list. As with a book, take notes. Go back over those notes at times. Do this daily. Items which are confusing, but a core component of what you do every day may need its own dedicated block. For example in addition to dedicating time to X confusing thing, you could learn one VIM command or trick every day and then have a list of items to practice.

It's part of our ongoing education.