Got a Nexus 5?...Or Upgraded Android to KitKat? Don't know how to use Google Now? .. Here are the answers to all your question...There are a ton of cool things you can do with Google Now, but with Google constantly adding more voice commands (and integrating Google Now even more with Android KitKat), it's easy to forget all your options. This graphic shows many of the latest instructions available if you just say "Okay Google..." or tap the microphone.
So, go ahead, say the magic words or tap the hell out of that microphone button and try them out yourself!