About three years ago, My tax/accountant informed me that I should maintain a 403b for tax purposes, etc. etc. etc. Is this 403b the same as a mutual fund? What should I be looking out for in my 403b? Do I compare it to the S&P? Again, bare with me, I am new to all this investing "stuff". And so I just want to start asking questions about what is right and wrong without hearing confusion, or as my significant other would say, "Don't you know what the hell you're doing?" Thanks