Any Car Buffs Out There?

I’m taking a physics class and I’m doing some research on naturally aspirated engines and I’m finding it really hard to get information that isn’t an opinion. And a lot of the sites just talk about super and turbocharge. Can anyone guide me to any useful websites or give a little info on the pros and cons of naturally aspirated engines or just information on them in general? Videos and diagrams can also help if you have any!!