What foods do you avoid?
There are many books on the topic, and each author has a slightly different spin on it, but the most common ones are Gluten, Dairy, Eggs, Corn, Soy, Sugar & Sugar alternatives, Peanuts, Processed foods and if you have arthritis - Night Shades.
Night Shades are potatoes, tomatoes, eggplant, peppers, dried herbs and spices that are made from them. (Black Pepper is usually not included). These foods can hide almost everywhere, that is what can make doing the diet a challenge, but if you remove processed food and eat real whole foods, you take almost all of that stress out of the equation. It is the biggest tip I can give you, and it will last a lifetime:)