Saddle Stitch Binding
Saddle stitching is basically a matter of using a long reach stapler to stitch your pages together with a vertical staple “saddling" (or in the horizontal middle of) your pages and folding those pages in half to form a spine. The only equipment required is a long reach stapler that can be bought for around $20 that staples 20 pages; expect to pay a little more for those that staple larger amounts of paper and possibly a paper cutter to even up the edges of your booklet caused by creep.
The biggest asset will be a program that will set up signatures like Pagemaker, Adobe InDesign, QuarkXPress, Corel Ventura, Microsoft Publisher, Scribus (a free program!) or Page Plus.
To show you what I mean by pagination, look at the following diagram of four signatures:
The diagram to the left is for an 8-page booklet made from 2 pieces of paper printed on both sides and folded together. The size of the paper could be 11 x 17 or 8 ½ x 11, either way when the book is “stitched" or stapled at the fold, it becomes an 8-page booklet.
The advantages of this type of binding is the low tech, low cost production and the ability for saddle-stitched books to lay flat. Covers in a light 67lb stock work best, although a laminated color copy works as well. The disadvantage of this type publication is the limit to the number of pages stapled. Although there are staplers that will staple much more than 20 pages (which, keep in mind, will make an 80-page booklet), there is a limit to the number of pages that will look right when folded over and merely held by staples.