Math major here. When in school, I almost exclusively used PDFs of my textbooks. My desktop at home had three monitors: a 21x9 ultrawide on the bottom and tw

Math major here. When in school, I almost exclusively used PDFs of my textbooks. My desktop at home had three monitors: a 21x9 ultrawide on the bottom and two 16x9 monitors above. This meant I could have LaTeX, a web browser, and three or four windows with different pages of my book open at once. Well done digital books can quickly be navigated via a sidebar table of contents, or simply using ctrl-f. It all made for a much nicer work flow than sticking different fingers/pencils/etc between pages and constantly switching my attention between a book and a notebook, and a screen. Admittedly this was much trickier on a single laptop screen, but with a few virtual desktops I still preferred it to the analog approach. I think that the real hold on textbook ebooks is the horrendous web based formats that most come in. The above approach would admittedly have been impossible if I were acquiring my textbooks legally.