How do you deal with flipping back and forth pages? For math classes specifically (realistically the only classes that I used a book for), I would frequently f

How do you deal with flipping back and forth pages? For math classes specifically (realistically the only classes that I used a book for), I would frequently flip all around the book, where I was flipping too and from varied per chapter of course. Often times it would be 2 or so locations in the book that had all formula's listed (for the well organized math books!), the n and n-1 chapters text, the page with the current problem set that I was working on, and an answer key in the back of the book. I guess I could set all of those up as bookmarks, but it'd be a real pain to have to keep adjusting bookmarks every day. The slow page turn speed is just a killer for e-readers IMHO. Heck even for large PDFs on tablets I have issues. Right now laptop is about competitive with a paper book (and searching can help a lot, but PDF searching is abysmal in seeming 80% of PDFs), and last time I tried a tablet (about a year ago) they tended to just choke and die on RPG ebooks. (But hey, they are 2x as fast now so maybe things work...)