As stated in the subject, I'm debating between Vanguard and Fidelity.

What questions should I be asking myself and the firm before making a final decision?

How do I decide on the type of fund to select? A link or book recommendation would be great!

How old are you?

(Or more importantly, in how many years do you want to retire?)

Eary twenties, retire @ 55.

try these links for some reading that can answer some general questions

http://www.bankrate.com/brm/news/sav/20000320c.asp

http://www.fool.com/ira/opening.htm?logvis...nce=y&bounce2=y

Vanguard has always had an excellent reputation. But I don't really know who is best.
Let us know what you find out.