Places To Buy Stuff From
This is the
place to get Arduino shields. Other places sell similar stuff but these guys put a lot of effort into making sure the drivers for them (software that runs the hardware shield) are current and work! I have struggled with other shields I bought elsewhere with the same functionality only to learn the drivers they offer do not work. Adafruit ROCKS
I have also noticed that Amazon is starting to carry some of their products as well which can help with shipping sometimes.
I have bought a couple of things from these folks when I couldn't get something from Adafruit in time but they offer slightly different versions of the Adafruit products.
Because of this you will need to use their drivers and sometimes they don't work, which can add a lot of frustration to a seemingly simple project.
I have two of these stores near enough to me to get something that I need electronics-wise the same day - just walk into the store and buy it. It is nice I can use their website to search for what I want and see if they have it first, too.