BookletCreator - is a free online tool that allows to create a booklet from a PDF document. It reorders pages so that after printing and folding the pages you get a small book.
The original document should be in PDF format with "Portrait" paper orientation. If you have a document in the format other than PDF, you should at first convert it to PDF. You can use some free PDF creation tool. PrimoPDF is recommended. They have a desktop and online version of their tool.
http://bookletcreator.com/Instructions/Primo Home:
http://www.primopdf.com/
