YouTube and Lynda.com have some excellent tutorials. As you begin to familiarize yourself with Fireworks, I particularly recommend these:
Touring the interface
Fireworks CS6 Workshop | by Tom Green
View this entire Fireworks Introduction and more in the lynda.com Online Training Library ®.
The Application Bar
https://www.youtube.com/watch?v=EljJqbN_E2U
Panels
https://www.youtube.com/watch?v=kiSdmMCu4FY
The Properties Panel
https://www.youtube.com/watch?v=ZKcd1Blc_a0