text: Good question -- it really depends on WHAT you want to do in radio.  The "act" of being a DJ -- playing music and turning-on the microphone etc., -- is really very simple.  The hard part is making what you say entertaining and engaging.  Many colleges have broadcasting departments, and offer students a chance to work in college radio to hone their skills.  If you want to go into radio news, you will need a good education in the way government and society works.  Even a two-year AA degree would be a good start.  Record yourself speaking.  Ask your friends to listen.  Are you saying the ends of words?  Do you say "pencil" or "pensa?"  Do you say "style" or "sty?"  Take speech class at the local college (or high school if you're still there) and ask the teacher to REALLY help you.  You will probably develop a "radio voice" different from your everyday voice, and over the years, the two will merge.  Visit a few radio stations, and ask if you can just "hang-out."  (Not tour, but actually stay for a few hours.)  Before long, a DJ will say "hey, can you push that button for me?"  Let's face it -- many DJs have big egos, and would love to show you everything they know!  Let them, and take notes.