J's Bubbe

Hi everyone. I am a newbie today because I have a big problem with my 1985 Corolla GTS. I have been having increasing difficulty using my driver side window winder and today it finally snapped with the window 4" open in the snow. I am 65 and able to work on my little car if I know how. Problem is, I don't know how to go about fixing this winder. Can someone help me by walking me through it or directing me to a website, Please? Thanks. Grandma C