What is your current level of knowledge? If you're starting from scratch, this is likely a good place to begin. However, it is also likely to insult your intelligence if you know a bit (Dummies is very appropriate for this series).
I would consider your retirement plan as another source of information, they often have good educational tools about mutual funds and investment option types. Don't limit yourself to one investment house, unless you want few specialized funds and mostly passively managed funds (Index funds). Then pick the one with the desired specialized funds.
