Life changing tip that helped me retain textbooks significantly more.

For disclosure: I study on my iPad.

I used to read a text book with my iPad lying flat on the table and slightly tilted to the right,as such my retention of the textbook was poor. Now I set my iPad in a way that it is standing and eye level,reading at eye level signficantly improved my retention. Now I have retained everything I read just because I am reading at eye level.

TL;DR: Reading a textbook at eye level is superior to reading a textbook on flat table in regard to retention.

For reference, this is the eye level position I have referred to in my post https://ibb.co/whS8nQyx