From the Pre-Purchase FAQ
"If you’ve pre-purchased the Limited Time Collector’s Edition, you’ll get a Greater Tome of Learning per game world for the character of your choice. Your other existing characters, and every new character you create from then on, will receive a free Lesser Tome of Learning. Redeem your “Menace of the Underdark: Pre-Purchase Ticket” on the character you want to receive the Greater Tome of Learning, and all subsequent characters that redeem the ticket will receive the Lesser Tome of Learning."
Where it says "game world" does this mean server?
Is my thinking correct in that you recieve one greater per server and the rest are lessers?