How Can A Faster Rider Aid A Slower Rider On A Long Ride?
Novices I've ridden with are surprised and pleased that I ride behind them.


They set the pace
I can watch what they're doing
I can ride close (enough to talk) without being too close (i.e. without colliding)
I can recommend which gear they change and when
I keep car traffic off their tail (e.g. by my using arm-signals to the car to say "slow down" or "please overtake", and by riding closer to the centre line than the bike in front of me does, etc.)