Sometimes you have to print a pdf document that have 2 pages per sheet, like for example a book scan. Most peolple will print it with a horizontal layout; but the final look won’t be like to original one, of course.
Looking around the Internet i found a nice software that can easily split every single page of a pdf document, so you can print it like a normal book.
It’s called A-PDF Page Cut and you can download the trial version for free. It’s very simple to use: open the pdf document you want, put cutting lines, applicate them to the whole document and apply the changes.
The trial version put a watermark on the first page (so maybe you want to insert a blank page at the beginning before using this software)