Study habits?
For myself, I used to rawdog the textbook / lecture notes most of the time cos I was just lazy af to make notes. Tried flash cards and it worked well to help memorise stuff, but making it was a pain. Annotating my pdf lecture notes was also annoying cos I didn't have a tablet. Studying on phone was also bad cos the ereaders couldn't show the pdf notes properly without zooming and moving the damn notes around.
What study habits worked for you? Do you use any apps for studying?