The secret to learning is to pass whatever it is you want to retain through your mind.

Not wishful thoughts, not determined necessity, the action itself.

Stop distracting. Handle the material.

You do not need to memorize it. In any practical circumstance there will be accessible references. You need familiarity. Go over everything. See everything. Some recommend when reading to restart at the beginning if you find you have lost your bearing. Don’t feel in a rush, or that every detail must be retained.

Familiarity.

And the more your mind turns it over, the more you are developing self references.

Get off your lazy ass and look it up when you think.. what was that? And do not push the thought aside when you habitually tabulate or correlate casual life circumstances with the “learnings” you are after.

Learning happens differently in various kinds of minds, every one will have an optimal solution.

Good memory? Develop inference.

Technical prowess? Deduction is to decode, references will have exact values.

Develop a relationship with yourself over time to discover your best methods. The critical necessity is that you spend the time doing it! Do it!

The integrated knowledge will come to those who take it upon themselves.