“Acquiring information is not learning. You can’t learn to write novels, ride a bike, wrestle, fill out spreadsheets, or write Java code by reading textbooks. Textbooks can help, but they only work when combined with practice.”
You know that thing you want to learn? This post can help you do it.
The system is separated into two phases. The first is the research phase in which you do things like find resources and determine scope, and the second is the learning loop in which you do things like play around and learn to do something useful.