anyone know how to unclog a drain?

Which drain? Sink, shower and toilet all go a bit differently. For a sink or shower, nine times out of ten it's hair and soap just below the plug. Pull the stopper out and fish it out with one of those cheap plastic barbed drain strips, it's gross but it works. If that doesn't do it, a plunger: block the overflow hole with a wet cloth first or you're just pushing air around. Kitchen sink still slow after that, put a bucket under the U-bend, unscrew it and clean it out. I'd leave the chemical drain cleaners alone. They often don't clear a solid clog, and then you're plunging or opening a trap full of caustic water.