You should invest in what you know a lot about. Do not listen to me or what you read in the newspaper or what you see on TV. Stay with what you know and you will probably come through in better shape than everybody else who is putting money here, putting money there and taking hot tips.
I for instance put some of my money into places that are depressed, Japan, Russia, agriculture, areas that are somewhat depressed.
Trading: iShares MSCI South Japan Index Fund ETF (EWJ), Market Vector Russia ETF Trust (RSX), PowerShares DB Agriculture Fund (DBA)