I was actually thinking about something like that, when I prepared some squid a few days ago.
I would have liked to know how better to clean it (remove guts by grabbing tentacles and pulling, cut tentacles from head and throw away head with guts, pull quill out, remove skin), a warning how long it takes, and the tip to clean first, then freeze, so you don't have to spend time on cleaning on the same day you are cooking it.
I suppose you mean something like that?
http://www.foodsubs.com/ has a lot of alternatives for different kinds of food, but it is not always easy to find what you're looking for.
http://www.bbc.co.uk/food/ingredients is quite good for general information on ingredients.
I'm curious what others have found.