The Learning Loop.
Learning rate equals the inverse of loop length. Cut the loop, learning compounds.
Tutorials are an inferior substitute for shipping. They're shipping with the learning removed. You watch someone else close the loop and walk away with the satisfying feeling of progress without any.
Real learning needs three things: a thing you ship (smallest possible), real observation (real users, real numbers), and a revision based on what you saw. The shorter that loop, the faster you learn — strictly. Two-week loops outperform two-month loops at every margin.
The trap is reading more, planning more, scoping more — all of which feel like learning and aren't. The only signal that learning has occurred is that you ship something different the next time, on purpose.