Summarize the following:
Set your oven to convection and make some room on the center rack. Let it begin warming up as you assemble the nachos. A lower cooking temperature will allow everything to heat evenly throughout without burning the chips. Melted cheese and other temperamental ingredients can stick and harden on an ungreased cooking surface if you're not careful. A quick spritz of cooking spray will prevent that from happening, even with the cheesiest nachos.  Nonstick cookware can be cleaned with a simple wipe, saving you a lot of messy cleanup. Choose a deep pan or casserole dish that will contain all the ingredients you'll be heaping onto your nachos. Distribute the chips out to the edges of the dish. Make sure they're lying as flat as possible. This way, they'll be able to hold toppings better and won't be as likely to break.  Use a hearty style of tortilla chip that will hold up to heavier toppings.  Try to overlap the edges of the chips so there are no open spaces between them. Distribute the cheese evenly over the top of the tortilla chips. Use as much as you please—for smaller portions, a couple handfuls should be enough, while you may need to use an entire package for party-sized platters.  Freshly grated cheese tends to melt better than bagged shredded varieties.  Put down two layers of chips and cheese to achieve just the right ratio of crunch to creaminess. With your first layer complete, you can now pile on any and all of your other favorite nacho toppers. Fresh tomatoes, diced red onion, black olives, refried beans, jalapeño peppers, corn and black beans are all popular options. Once again, aim for even coverage with your ingredients.  Sprinkle a little more cheese on top to help tie it all together. Get creative with your nacho toppings. Try bacon-bleu cheese nachos with sliced scallions, or serve them fajita style with caramelized bell peppers and onions.

Summary:
Preheat the oven to 350 degrees F (176°C). Prepare a large baking pan with cooking spray. Spread the tortilla chips at the bottom of the baking dish. Cover the chips with shredded cheese. Add the rest of your ingredients.