I did my first half 3 years ago. I did not follow a particular schedule. I did a long run every week, starting from 5 miles and building to 10. Each week I added a mile to to distance. I ran shorter distances (usually about 3 miles) and did cross training (elliptical or biking) on the weekdays. I am not sure if this is the best way to train, but it worked for me. Its a simple plan and works with a busy schedule. (I was in the spring of my senior year of high school.) Keep in mind that I was pretty physically fit at the time, so my body did not require a ton of work to prepare for that distance. It might be best to use a build-up program before you dive in. There are many programs available on the internet also...i trained for my first full using hal higdon's program at www.halhigdon.com, which i feel was a great preparation for the race. I am sure he has an equally good program for a half marathon too. Good luck!