Booklet Creator. Fab little free online application that lets you create foldable booklets from any PDF document. Upload your file, and print on both sides of the paper to make the end result. Don’t forget your stapler!
Then you print out the document chosing “Print on both sides” in your printer preferences. If your printer can’t print on both sides automatically, print the odd pages first (Acrobat Reader has such option in printing preferences), then put the printed paper back into your printer and print the even pages. We advice to practice on short documents to ensure that you understand how to turn paper so that the front and the back of the page are printed the way they should. Finally you should stack pages in the correct order, fold them in half and staple them.