Seekingalpha has a guide for ETF investing. The guide is worth a read. It covers the following topics:
1. The factors to optimize for higher investment returns.
2. Why Tech stocks dont work
3. Why one shouldnt buy mutual funds?
4. Advantages of buying ETFs
5. How to assemble and manage a ETF portfolio?
6. Analysis for different situations.
7. Putting everything together
Happy reading at http://etf.seekingalpha.com/etfguide.