The Whole Life Challenge isn't a diet or a meal plan in the way traditional challenges are. The nutritional guidelines will give you an outline more than a specific plan. The challenge will give you practice in using that outline to make good nutrition work for you, in your life, over the long haul.
That said, here are a few "cheat sheets" that will list all sorts of foods that you can have during the challenge based on the level you choose. Keep in mind, there are slightly different rules for vegetarians at the Performance level, so make sure to check out the list that's right for you.
The Performance level is for people who want to use the Challenge to maximize athletic or training performance. This level is very challenging and is not, for most people, something they'd want to sustain after the Challenge ends.
The Lifestyle level is for people who want practice in a level of nutrition that is healthy and sustainable over the long term.
The Kickstart level is for players who are just getting started and want to eliminate some of the most egregious dietary offenders.
Most of all, don't worry, you're going to do great! Stick to the veggies and lean proteins (like chicken, fish, pork and beef loin, eggs), add some good fats -- things like olive oil, avocado, coconut, even butter.