My parents are in prison for sexual offense. I was wanting to know what the first time offender law is and how it can be used for someone that has spent half of there sentence already?

If they are sex offenders then they really can't use a first time offender thing. They would have to do their time and then register as sex offenders where ever they live.

First time offenders is more for non felony offenses, more like summary offenses and less serious offenses than sexual.