Fifty Ways to Tie a Scarf from Scarves Dot Net here (look at high res version). It says forty but they are adding new ways to tie scarves every day and if you click on a scarf there are detailed instructions and sometimes even a video to show you how to tie it. This site also has fabric care for scarves, and how to tie the following scarves and more (and numerous sub categories):
- bandanas
- circle scarves
- head scarves
- rectangle long scarves
- skinny scarves
- square scarves
- wrap scarves and tons more - you get the picture: everything you ever wanted to know about scarves.
Source: scarves.net