You can purchase my crochet patterns on the following websites:
Ravelry ~ My personal favorite, there's no waiting for your pattern to be emailed, it is available as an instant download after purchase! This website also allows several pictures to be uploaded so you can see all the variations of the pattern. I love Ravelry!
Craftsy ~ This website also has instant downloads!
Etsy ~ As of May 2013, my patterns are also available as instant downloads on Etsy! (With the exception of the pattern packs, because you must tell me your choices.)
Some of my patterns are pictured below. Click on the image to go to that pattern on Ravelry.