Stirfry! Beef, pork, chicken, and whatever veggies you like. It is super easy... you can use a wok or just a regular frying pan.
I don't have a lot of money so I buy plain frozen veggies because they are dirt cheap and they don't go bad on me... I can't afford to waste food. So I pop a bowl of veggies into the microwave to thaw out while I'm cooking whatever meat I have (often chicken) and then I throw it all in the wok together and season it.
For spices I just grab whatever I feel like out of the cupboard that sounds good. Garlic, onion powder, white pepper, crushed red pepper, chipotle pepper, ginger - I have also done a "pizza" chicken before where I use oregano, basil, and parsley, then add tomatoes.
Stirfry is really really easy to cook, it doesn't take a whole lot of skill. You just get some oil hot in the pan and throw stuff in and let it rip.
Here is my pinterest board for foods, not all of these are paleo and some are ideas I want to transform into something more paleo approved:
http://pinterest.com/sheltiechick/clean-foods/
ETA: What I would do is cut out all wheat for sure, corn if you can, and probably avoid rice for a while too. Stop the milk products for now. Before I cut out gluten, milk products were a possible trigger for me, but now that I'm off gluten I can eat cheese without any problems at all.
Basically no grains and no dairy for at least two weeks and see how you feel. You should start to feel better at that point. If you can go a full month without grains and dairy even better. At that point you can try adding dairy back in - only full-fat stuff, no skim milk or 2% cheese - and see how you feel. If you start having trouble again, take it back out.
For me personally I am okay with corn and rice (I still don't eat either very often though) but wheat is the definite no-no. However before I got rid of the wheat, honestly, I'm pretty sure my gut was so messed up it just didn't matter. Everything aggravated it. Now that everything has had a chance to heal I can eat corn again and not get sick whereas before it was basically 50-50... might get sick, might not... no way to know. It did take a few weeks before I really noticed a difference though. You might have a similar situation. I read an article the other day about gluten where if the body reacts poorly to gluten, it can also develop a bad response to the other foods that are in your gut as the same time as the gluten - there was a big list. So far though, the only thing that will still make ME personally sick is wheat.
You might look into The Whole 30, but I think it's a bit intimidating... however my friend is having a lot of problems and she told me she is going paleo, and wants to do The Whole 30 as her introduction to it. It does lay out the rules pretty clearly (and strictly!)