In reply to two_tapirs:
I'd say unless it is heaving I'd go to a popular venue. We've had 3 days at Stanage popular end this year teaching my son to lead. The climbers around us provided great company but were also on hand to provide useful support. For example some one offered to pop up the descent to check my sons first ever belay. In the end I declined but it was great to have the offer. As people found out he was learning to lead he got lots of positive praise
So chat to the people around you. Ask if you need advice e.g. How well protected this? Where does it go? Where is the descent? How do I do this move? Does my belay look OK?
I'm not suggesting that you can call in at Outside and buy all the gear and arrive clueless expexting a free lesson. But people will understand from when they were learning that even if you know it all re assurance can be nice in the early days
Even at any easy to navigate crag like Stanage finding routes and descents can add alot to the overall burden of learning to lead
At the same time of course you will be being patient with thers. Leave space at the base of the route the next party. Laughing at their jokes and generally join in