Radio amateurs have their own communications satellites, can talk to astronauts aboard the International Space Station, and are often involved with cutting-edge experimental wireless technology. It is an incredibly diverse and very popular interest with over six million people involved worldwide.
Radio amateurs use a wide variety of radio communications equipment to communicate with each other and provide emergency communications for their communities.
The amateur radio frequencies are the last remaining place in the usable radio spectrum where you as an individual can develop and experiment with wireless communications. Radio amateurs not only can make and modify their equipment, but can create whole new ways to do things
Watch Introduction to Amateur Radio
Read the RSGB Newcomers page http://rsgb.org/main/get-started-in-amateur-radio/
Short amateur radio training courses can be found here http://rsgb.org/main/clubs-training/find-a-club/
Watch The DIY Magic of Amateur Radio