Have the snorer look at the Stop Snoring Tips section.
Wear earplugs to filter out the noise.
Make an arrangement where you'll go to sleep first and the snorer goes to sleep only after you have fallen asleep.
Avoid taking naps during the day which will make you more tired at night and help you fall asleep easier.
Exercise during the day so you'll be more tired by the time you go to sleep and will fall asleep faster.
Work out a sleeping arrangement where the snorer and you sleep in different rooms.
If the snorer is keeping you from sleeping, either call out their name or give them a little nudge and request that they sleep on their side which will open up their airways and reduce the snoring.