Depending on which carrier you have, there are sometimes workshops that will walk you through the various features of your new device. I know Verizon has this service but can't say that I have ever attended or known anyone who has...
This is also a nice guide from Google themselves. If you've already made the switch, scroll down and tap "More tips to get you started." Switch to Android
I always had my iPhone 3GS and 4 set at the brightest. My Note 2 and Note 4 are like at 1/4 brightness. These things are light bulbs and kill your battery at full brightness. Plus I turned off Auto for the brightness.