There's a screw behind the inside door handle and one on the little cubby space next to the window switch. After those are off you can disconnect the lock cylinder and window module and remove them. Next you pop off the speaker cover and remove the three screws, they are in the screw holes in the door panel. You do not have to remove the actual speaker. Next pop off the tweeter in the front corner of the window. You do not have to disconnect it but you can if it makes it easier. Now you can pop off the door panel. Start at the bottom and pull it. You should hear the clips poppin out the holes. You may notice some of them broke they tend to do that. Now on to the fun part. Reconnect the window module and put the window all the way down. You should be able to see a screw thru the hole at the bottom of the door. You will need a 10mm socket to remove the screw. There is also another screw towards the front of the door that holds the window to the track remove that one to. Now pull the window up out of the door and place it on something soft and please don't brake it because then you are screwed. Now get something to lube the track like windex or silicone spray. Also get some kind of grease and lube the tracks of the bracket that the window rides on.( you should be able to see the little wheels that ride along the tracks of the braket). Now is also a good time to clean any dirt out of the window or anything else that can cause this from happening again. If you think you have done a good job cleaning grab the window and slide it back in making sure you keep the front of the window in the track, slowly lower it making sure it goes in smoothly. Line the bottom of the window up with the holes that hold the window to the bracket that moves the window up and down. Make sure you tighten them good. Test the window to make sure it rides in the track smoothly and re-lube it to ensure a nice smooth fit. Once everything is working properly you can reinstall the door panel and and then reconnect the window switch and lock module. Don't forget to put the screws back and test the window again and you are back in business. It is also a good idea to lube the tracks every now and then to prevent this from happening.