What do you wish you can learn more easily right now?

For example, advanced CSS, design patterns for modular components, math etc. etc.

Is there something you wish you understand better, but there's no feasible way to learn it because the existing explanations aren't good enough, or that getting someone like a private tutor would be too expensive?

For me, I didn't understand book-keeping & taxes, so wasted $5K/year using Pilot, when I could have done it myself for $1K/year if someone had explained it to me in 30 minutes. Same with CSS, I so often run into nuanced behaviors with flexbox inside of a flexbox situations, wasting 3-6 hours debugging, without ever understanding it better.

What kind of things do you wish you can learn more efficiently?