http://www.quiltpro.com/
You'll find CarolDoak software here. I have them all and like them as well as other FF editions. Later on, when/if you buy any Carol Doak's books (Simply Sensational 9-patch, for instance) they usually have a software CD included so the blocks in that book can be downloaded to your FF software and is added to your existing Carol Doak/FF programs. Foundation Factory is the main program. I highly recommend it as I love paper piecing. The FF includes tutorials on PP, Check the site above! you DO NOT need to buy FF separately, it is already in the editions to run them.It might be a good idea to subscribe -free-to their Block of the Day newsletter on top right of the site.