note: Please feel free to fact check, make corrections, etc. I'll do my best to keep up but I apologize if I miss anything.
-checking or tracking nutrients, calories, etc; Entirely too much information if you just want to count calories but I like it: http://nutritiondata.self.com/
More Broccoli less chips blog
-Eat plenty of fruits and veggies from a wide selection. For some locations this may be harder than others, don't be afraid to buy frozen if you need to.
-Protein: leans meats, fish, legumes
-Specific to some anti-cancer diets out there; acidity of food and sugar don't matter nearly as much as some of these diets make out. There are other reasons to avoid mass intake of refined sugar but this isn't directly one of them. See here, here, and here.
3. Avoid binges. If you feel like pizza one day, eat it. But tomorrow when you want ice cream, or the birthday at work is giving out cupcakes, pass.
This is fairly important for your sanity, especially as you're transitioning diets.