What are the rules for teachers and researchers making copies for themselves starting March 1, 2018?

Teachers and researchers (including students) may reproduce up to 75% of a work for their own scientific research (for example, from printed or online monographs). This includes all non-blank pages whose content consists predominantly of text.
Copies made in this way may not be shared with others.

Complete reproduction for personal scientific use is permitted for illustrations; individual articles from the same specialized or scientific journal; other minor works; and out-of-print works, regardless of how long they have been out of print.