Low in fat, high in fibre, and a bit of protein. They taste disgusting, but I can't see how they'd hurt
I'm not a big fan of calorie counting, however I will point out that whether you're trying to gain weight or lose it,
how much you're eating is as important as
what you're eating.
DarkHelmet has given you some good pointers - though be careful not to overdo the protein bars/powder, since I can guarantee you'll be getting more than enough protein anyway.
But yes, you'll need to consider your height and weight and age and extrapolate your daily caloric requirement from that then do some quick napkin-math to make sure you're neither eating too much nor too little. If you eat too little, your body will start gobbling up your muscles which in turn will further inhibit your ability to burn fat.
But at this stage, don't panic too much unless you get a month into a regime and you're not seeing any results. Counting calories sucks, so the guideline of 5-6 small meals per day is a good one for now. Also make sure you eat
within one hour of exercising.
In terms of your actual workout routine, don't just focus on the cardio. It's important to do some strength training as well. Greater muscle mass means an increase in your basal metabolic rate...as your BMR increases, so too does the attractive prospect of your body burning off more calories while you're sitting on your arse watching TV.
I could go on, but this is starting to feel a little too much like an assignment. I graduate in 2 weeks with a degree in exercise science. Go me.
Good luck,
apostle83.
Personal trained for 7 out of college. Went through a few certifications, including Paul Chek's C.H.E.K internship program. 
