@Rasta
I see, the audiobooks do have convenient functions. One can say your ability is high as you actively make use of them.
To be honest, I'm the type of person who gets lost even within 100 meters from home if I lose my concentration, so I still read paper books.
But I do use e-books for craft patterns and instructions. I print out the pages I need and take notes while referring to them. It's nice that with the times, ways of reading books have also diversified and become more convenient♪