It's a nice quick hike, easy if you are comfortable with friction. Follow the climber's trail from the road to the base of the cliff, skirt around to the right, all slabs from there. There are a few cracks you can follow if you want something to grab onto. It's not as steep as Snake Dike. I can't remember if you can see Half Dome but there's plenty of other stuff to look at.
Essentially you are reversing the descent listed here:
http://www.supertopo.com/rock-climbing/Tuolumne-Meadows-Fairview-Dome-Regular-RouteThere is only one descent route: walk south down the giant knobby slab of the dome. The descent is mostly 2nd class with one 3rd class section. Bring approach shoes unless you want to kill your toes! Climbing shoes are not needed for the descent. After getting down to the bottom, contour back right along the face until you reach the base of Lucky Streaks, then follow climbers’ signs back to your car.