For information on studying for and writing the Amateur License Technician Exam, please visit the American Amateur Radio League for further information (http://www.arrl.org/licensing-education-training). Amateur Radio consists of, but is not limited to, world band shortwave (HF) communications, satellite communications, high speed multimedia data networks (i.e., Amateur Radio Networking/Internet via 802.11 WIFI over high power and long distances on amateur radio frequencies), Amateur Radio Networking and tunneling via the Internet, digital world wide communications over frequencies less than 30 MHz, and much much more. In the United States, there are three license levels. Technician, with all privileges above 30 MHz and some privileges for world band use below 30 Mhz, General with most privileges below 30 MHz, and Amateur Extra with all privileges below 30 MHz and CEPT European Amateur License reciprocal operating privileges.
The AA9PW website also offers testing information and practice exams, and can be a very useful resource when studying for your exam (http://aa9pw.com/).