Hi Paul,
Recieving's easy and a blast to do. In order to get the "ham" bands, though, you'll need a higher end receiver that'll cover AM, FM, CW, and Upper and Lower Sideband (LSB USB). This way you can receive regular or emergency shortwave programming, local radio channels, as well as the ham bands. Some of the Grundigs and Sonys are great radios. A couple of good sites to look are Ham Radio Outlet, QRZ, and Texas Towers as well as others. I cant keep up with the technology, so I just stick with my ancient boat anchors! If you're interested in the "old school" stuff, Hallicrafters, Hammarlund, and Zenith were phenomenal radios. EMP wont touch 'em, either! For a radio to stick in storage for a rainy day, the Grundig's are probably the easiest.
Transmitting's a different beast. You'll need a well tuned antenna and a 12v power supply. With receiving, pretty much any wire strung out will work, but to transmit, the antenna's got to radiate to a specific frequency range, otherwise, you'll damage the radio. 12v dry cells work also for power and can be charged from solar panels.
Getting a radio license is really pretty easy and quick...30 question, multiple choice exam from a test bank that's published to the public, and $15...the Volunteer Examiner does all the paperwork for you, as well and submits to the FCC. It opens up a whole new realm of preparedness!
Let me know if this answered your questions.
redtailhawk