Makeupalley is amazing once you figure out how to search for reviews by people in your age range with your skin type and/or coloring. I agree wit Laura that the forums aren't that helpful...
Sephora will also do a full make-up job with $50 (I think) purchase, and MAC has a similar deal. Throw yourself at the assistant's mercy (make an appointment). If you like the way an assistant looks, address her directly. Make sure you get someone experienced (insist, really) and let them know what you like and what you hate (on yourself and others). For example, you might love the pin-up girl look, but if you hate yourself in red or dark lipstick, that's not a look for you! If you can bring in some photos of looks you like, even better.
I had a great experience at a MAC store in California. They don't just do rock 'n' roll makeup--they have lots of 'my face but better' makeup. Ask for samples, especially of foundation, before you plunk down serious cash for something that only looks good in a certain light or turns out to be too moisturizing.
It can be overwhelming, so you might just start with one thing, like getting a good everyday eyeliner/eye shadow combo that works for you.
