I've been a Ham Radio operator for a number of years - and yeah they are reliable communicators. You must be licensed by the FCC to operate them, and if you upgrade your license class, you are allowed more frequency privileges (more elbow room), which increases the range at which you can conduct reliable communications.
I have a handi-talkie, and a longer-range base station. Power output in the 5-10 watt range is more than sufficient for short range communication. My base station has a factory output of 100 Watts, which is more than enough to get your signal around the world with a good enough antenna.
Lots more of the communications on Ham Radio is being done by voice, as opposed to Morse code (which is no longer a requirement for higher license classes). It makes for a great hobby, and keeps you in practice for when the real thing happens. I loved operating in the North Texas area, where I got to do a little storm-watching for the Weather Service, and serve as part of a large early-warning system for tornadoes! It's a great way to provide a valuable service and capability in your local community.
There are many ways to prepare to get your license, but everyone still has to find a place to take the FCC exam to get your license.
You can find a few guides to get your license at
http://www.arrl.org (American Radio Relay League) - and perhaps even a local radio club where tests are administered.
Regards,
Fachento