Are you still using your very old mobile phone that cannot do anything except making phone calls? Do you want to buy a smartphone but don't know which one to get? Are you confused by the smartphone operating system/platform? Do "Windows Mobile", "Windows Smartphone", "Symbian", "Blackberry", "Palm OS" sound alien words to you?
Don't worry. CrunchGear.com posted the first time smartphone buyer's guide today. It contains detail explanation about different platforms and functionalities.
Of course, Shopzilla.com does the price comparison for you too.