In reply to Aku:
I was there a last year, we drove up the valley and hike around the lakes/reservoir which was fun.
In terms of routes, check out the 100 crack climbs guide, it's really good, there's a UKC ticklist of that too.
https://www.ukclimbing.com/logbook/ticklists/100+_orco_cracks-7475?sort=gr
Already mentioned is worth doing Harry Potter (5c) - Bolted at 5.8 but could be good gear placing practise route. There's a few other bolted routes at that crag ( Pietro Filosofale) that aren't too hard either, some cracks some not.
Paperetta Show (aka Mary Poppins) (5c) is about 5.7/5.8
Apogeo (6a) and Cochise 1 (5c) are about 5.9
Incastromania (6a) is incredible and worth seeking out, probably 5.10 but well protected throughout with cams.
Enjoy!