Car Transmission Problems Please Help?

Ok so I got this car while my girl is away for a while. I got a 1994 Chevy Cavalier 4 cyl RS.It is a automatic. FWD. It drove home great. It sat for about a week. I go out there to start it and drive it around for a while and it would not go into gear. I discovered it has a transmission leak. I can not seem to find out where in the heck that the transmission fluid goes in at. I have looked EVERYWHERE on that motor for the transmission dip stick. So where can I find a diagram to see where the transmission fluid goes in at. Also what mite cause the transmission fluid to leak as well as how could I possibly fix the problem? Thanks for the help