Do you have the manual for your 201? Most of the old Singer manuals have pictures and instructions for the various attachments in the back half of the little manual.
You can download free manuals from the internet that show how to use them, too.
There is a pretty extensive guide for just the ruffler here:
http://www.youcanmakethis.com/downlo...sq4FAK4bCbg%3D It uses a modern machine, but it gives you the idea. :)