This is a collection of helpful resources and some favorite places I've found over the years. It's always growing and changing so if you have one you'd like to add, give me a shout and it just may end up on this list!
A great tool for converting pretty much anything cooking related:
http://www.convert-me.com/en/convert/cooking
A guide to what foods have what kinds of vitamins and nutrition:
http://www.webmd.com/diet/guide/vitamins-and-minerals-good-food-sources
A list of the best sources for antioxidants:
http://altmedicine.about.com/cs/supplements/a/antioxidants.htm
A good source for simple, quick meals with a lot of kid-friendly fare. It's also a good place to find inspiration for creating your own recipes.
http://www.kraftrecipes.com/home.aspx
A source for some yummy, healthy recipes:
http://www.mayoclinic.com/health/healthy-recipes/RecipeIndex
For measurements and equivalents:
http://recipecircus.com/recipes/Joy/EquivalentsinMeasure/Equivalents_in_Measuring.html