[toyktdlgh]

I’m new to automatic transmissions and this old girl has a problem. She will not shift out of 1st gear at all. She goes into all gears like drive, reverse etc. but will not up shift. Recently, after the car has been running for a moment or two, I can hear a hissing sound coming form the transmission. Is there anyone out there that I can turn to for some really stupid questions regarding this car? I would like to get it a bit more mobile than it is now. Any help at all would be appreciated. I really know nothing about automatics. I have a service manual for the car but I need some help to get started. Thanks!
-Kevin