learning elven you go to the old elf lord in the elven forest.
you will ask about silence and he will begin you on the quest.
He will ask for a number of things. The things I'm aware of he has asked for are as follows. these things are random. so do not have them all prepared for ahead of time as you may not need them.

10 fire scrolls
10 ears of corn
10 druid flowers
10 manas
10 nymph roses 
10 coconuts 
10 pineapples