What's wrong with my car

I'm 17 I don't know much about cars I just bought my first car it's a 1997 Honda Civic lx, it overheats and the first cylinder has little oil drops in it. Little drops of the oil shoots out of the hole where you check the oil from. And the car turns off when I take my foot off the gas. The whole car shakes while the car is on in park. The oil is very dark dark dark brown almost black. I only work part-time so I can't afford to buy a new car. Some people are telling me to fix the engine other people are telling me to just buy a whole new engine. I need advice from other mechanics so I can know which one is worth it.

Honda civic 07 plate Air Con problems?

I have an 07 plate Honda civic, I just had the air con recharge done today. The mechanic says there's no leaks and the gas is staying in but air won't blow cold. The engine is working as it should and the air is blowing but it's staying warm. Does anyone have any suggestions what it can be that's causing the air to stay warm.

What brands or models of Cat-back exhaust systems do people install or prefer on their honda civics?

I'm looking for a Cat-back exhaust system for my 2000 honda civic DX four door. It has a d16y7 stock engine. I'm curious as to what exhaust systems other people have. I know their are the cheap ebay exhaust systems like Spec-D and name brand systems like Megan Racing and Greddy. I'm trying not to spend more than $300 if I can but I want a exhaust system that sounds clean. Their is a exhaust system on YouTube that I watched that s called torxe, it sounded very hollow but it is in my price range. Maby look it up and let me know what you think. I'm leaning towards Megan Racing but I have done a lot of research and I can't seem to find a exhaust system that s a little cheaper and sounds just as good.

Thank you for your input and please let me know what you find or think.