What’s it like to serve jury duty?

I received a jury duty summons. I responded and apparently I’m required to report for duty.
I’ve been thinking how to get out of it. I don’t drive, don’t have a car or a driver’s license. My partner is out of the country, and uncertain if he’ll be back by my reporting date.
The courthouse is thirty minutes away and asking someone else to take me would be an inconvenience.
Good thing is I don’t work so that’s not a problem, only transportation.
If I have to go, what’s it like to be on a jury? What can I expect?
This would be my first time.