Do you know what you want in a helmet? Start searching the net for manufacturers, styles, colors, features etc...Once you find something your interested in then I'd highly recommend finding a dealer so that you can actually try them on for sizing. FF helmets especially have different shapes, and us people have differnet shape heads. It's a tough decision, you'll want to get the right helmet, considering it will be on your head for extended periods of time, and what it will be protecting.
Whacker hit the nail on the head... no pun intended.. Search online for a style you like and in the $$ range you want to spend. Lots of choices (half, full, flip, etc). Once you narrow down your choices, search for a dealer that carries what you are looking for. If nothing local, then consider a day trip to a dealer (great excuse for a ride). Try the helmets on and then decide which you like best. Once you do that, if the dealer is too expensive or doesn't have the color you want, you could always order online if you can get it for less and have it shipped. Good luck in keeping your head safe and ride safe..
You may have to look around a bit Jeff. The most crucial thing about a helmet is proper fit and long term comfort. It should be snug, but not pinch or have pressure points. You can spend all the money in the world for the best helmet out there, but if is a poor fit it won't save your mellon.