You can try buying pizza dough, tomato sauce, cheese and the toppings you want for your pizza (ham, pineapple, bacon, etc).
You just have to spread the sauce on the dough, spread some grated cheese on it and decorate it with your toppings, after that you just have to wait until it bakes in the oven.
Its quite easy to make pizza when you have these ingredients. But if you want to make your dough and all that stuff, you can try looking for steps and stuff on the internet.
P.S(Sorry if you think I got something wrong, I'm not really an expert with this pizza making business but I got experience so yeah)