Conversation so far:
Tell me about the International Linguistics Olympiad.
The International Linguistics Olympiad (IOL) is one of 12 International Science Olympiads for secondary school students that has been held annually since 2003. Each year, teams of young linguists from around the world gather and test their minds against the world's toughest puzzles in language and linguistics.

Question: How do I prepare for it?
Self-contained rewrite: How do I prepare for the International Linguistic Olympiad?