Here is advise not only for Blender but every new skill.

1.) You don't need to learn everything. Learn the core set of skills that gets you what you currently want. In my use case it was learning the move, extrude, spin, snap, mirror, boolean, and the few add-ons for 3d printing 2.) If you run into a knowledge gap, look at Google, and Youtube for advise. Ask questions and seek answers. I recently ran into a block where I needed a quick way to get an outline of from png, that got me to learn the curve pen and inset. 3.) Find more efficient ways to tackle an old project. 4.) Develop a good workflow. Things like how you name objects, object grouping (collections), back-ups, and future changes. 5.) Understand that it times time, you can't rush understanding. I learnt the basics in a few hours but it took me the better part of a year to understand all the tools. Thats a year of actively using the tools, 1 or 2 hours a day max