How to study more effectively using an e-book?

Question

Books

I'm learning math from an e-book using my phone. How to improve the efficiency and memorability of information?

Answer 1

Solve more examples, use spaced repetitions. The brain remembers what is regularly required.

Answer 2

To solve problems.
What I have read is hard to digest. The general and the abstract can be slightly remembered
What you write, decide, create, use in practice - allows you to create much more associations in the brain, including motor ones, which allows you to remember and "understand" them perfectly.

Answer 3

I am studying mathematics by elect, books using the phone, how to improve the efficiency and memorability of information?

That's not how math is taught.
How to do it right: take a paper book, a stack of paper, a pencil or a pen - at the table, read, check non-obvious transitions with your calculations, solve problems.

Answer 4

The simplest effective way to assimilate information is to repeat the material covered.