Justin and I have been taking west coast swing dance lessons since last November (well we just started up again after a 1.5 - 2 month break...I'm just outta town too much!). It's a ton of fun and we've started in the "novice" class or Level 2. When most people think of swing dancing that that big band music starts playing in their head. It's just not the case for west coast...that music in your head is called east coast swing. Here's a good explanation of it from the swing dance club in Reno called the "Biggest Little Swing Dance Club" http://www.blsdc.org/
West Coast Swing is a grandchild of the popular "Jitter-bug", also known as the "East Coast Swing" and "Lindy", of the 1930's and 1940's. In the 1950's, when dancing was very popular and dance floor space was at a premium, Southern California dancers refined their dancing to dance in what is called a "dance slot", as opposed to dancing in a small circle. The "slot" method allows more dance partners on a dance floor than that of the East Coast, Lindy, and Jitterbug swing varieties.
Since it was invented on the West Coast, it became known as "West Coast Swing" or WCS for short. West Coast Swing is danced to blues, funk and R&B music, which is a slower beat than that danced by the other swing dances. There are basic patterns with quick turns and spins, but as the dancers improve, they are able to improvise and syncopate to the music so that what you see is a sexy, smooth dance, that is timed to the beat, lyrics, or various instruments of the music being played. "Once you see West Coast Swing, you'll want to learn it."