Project OSCAR - started in 1960 and was responsible for the construction of the first Amateur Radio Satellite OSCAR-1, that was successfully launched from Vandenberg AFB in California. Visit for latest OSCAR news.
AMSAT -Radio Amateur Satellite Corporation
ARISS - Amateur Radio on the International Space Station
Real Time Satellite Tracking - defaults to ISS
Using a Baofeng UV-5R to listen to satellites - you can use a ~$35 Baofeng UV-5R radio to listen to satellites such as the International Space Station and a lot of others.
Free satellite tracking software - Orbitron is a free software that can help you keep track of many different satellites so you can locate and listen/talk when they are closest to you.
There some others such as Gpredict. A quick Google search and you can find what one suits your needs.