Hello Howdy, I have Coelics disease which means I can't eat stuff with Gluten in it, so I use Potato flour for cooking loads of stuff (along with other Flours like Gram, Rice etc.).
For cakes and stuff you would normally mix Potato flour with some other flours.
I would suggest that the best thing to do is check the Internet for Gluten Free recipes, I'm sure you'll find loads of stuff .... here's a BBC web-site about GF cooking
http://www.bbc.co.uk/food/recipes/mostof_coeli ac1.shtml
Hope this helps,
Mort