In reply to climberclimber321:
I'd avoid Almscliff unless you want to risk putting them off for life!
Crookrise or Rylstone have some great routes with unbeatable views. Eastby too though maybe less for beginners.
In my early climbing life, having been put off gritstone for a few years by my experiences at Almscliff and Brimham (where we tried RH Crack, VS, at its old misprint grade of VD), I climbed mostly at Twistleton, Attermire, Peak Scar, and Whitestone Cliffe. These last two are probably best avoided unless they have a background in mountaineering