1992 Toyota Celica GT Features?

Hello everyone, I am the proud owner of a 1992 Toyota Celica GT. Let me tell you first off, I have been driving pieces of **** for about 5 years then I got this whip and im in love with it. I really enjoy driving it cause it raw power and amazing handling, albeit some of you reading this might think im joking keep in my mind my previous and only other cars were a 1993 Geo Metro, 1991 Toyota Camry, 1993 Ford Escort. You can see why I love the Celica! I have a few questions about the car though, being as it is older and it didn't come with the manual to the car. I was wanting to know if the car has any features that I am unaware of. For example my friends car automatically rolls down the windows if he holds down the remote alarm button. Also if there is anything in particular I should be on the look out for being as the car has 182,000 miles on it. I have already installed a aftermarket breather onto the car and it has helped. I'm just looking out to see if there are any "hidden" things about the car I could be missing and any other easy and cheap performance upgrades that could be made. Thanks for reading the wall of text! Peace out.