Blairbear mentioned walking around the rallies and checking out what others are using. I agree wholeheartedly. Most of us made our gear choices for a specific reason, and are happy to tell you all you want to know about it... and then some!
There are also some of us who think the gear we bought is the best (it probably was the best fit, for us), so everyone should use the same thing. There's a fellow I've seen at rallies in about a dozen states who definitely falls into this category. I've nicknamed him "The Oracle."
As far as cooking goes, it runs the gamut. I get by pretty well with some granola bars, dried fruit, and lots of fluids for breakfast. $5 footlong sandwiches at Subway will take the edge off for lunch, but if it's hot I'll only eat half, and put the other half in the tankbag to "ripen." It usually doesn't make it past the first gas stop. Supper can be anyone's guess, depending on where I'm at- in the "wild," at a campground, or at a rally.
There are a lot of easy meals to be made once one starts to keep an eye out for ideas. Grocery stores and their delis make a good start. Many times, they'll have good specials. Farmer's markets and roadside stands can often supplement these well. Grocery stores have a lot of "box meal" type items that can be made into a meal for one, two, or more on the cheap- like a couple of bucks per person. A little meat and some fresh or frozen veggies can really liven these up. One's palate and health preferences will determine the details of your choices.
I have a nice selection of lightweight/compact cooking gear. The longer my tour, the less I cook. If I'm staying in one spot, I'll cook quite a bit. If I'm parking in a new spot every night, I probably won't cook much at all.
After reading on various forums until you can't take it any more, then camping/cooking for a year or two, pretty soon you'll be an expert!
Safe travels, happy camping!