Skim the book making notes of key parts with pen and paper. The act of making the notes is usually enough for me to commit enough of it to memory to know what t

Skim the book making notes of key parts with pen and paper. The act of making the notes is usually enough for me to commit enough of it to memory to know what to look for when I need it so I get generally don't need the notes again. Then I get going on a simple project that is of relevance to me rather than the one in the book and use the book for reference as necessary.