In the amateur radio service, there are three levels of licenses:
Technician - privileges on the VHF (very high frequency) and UHF (ultra high frequency) bands
General - VHF, UHF, and HF (high frequency) privileges
Amateur Extra - the most privileges of all
I originally planned to take only one amateur radio exam - Technician. But when I found out that I could take the General exam for free the same day, I thought I might as well give it a shot. Last night I took 4 practice exams - 2 technician and 2 general - and I passed them both (with a little help...) The time is getting closer and I'm getting excited :) Soon I will get to poke around the amateur bands!