I think you will do fine without any of the books. Reviews I have seen on the shorter ones comment that there is not much more in book than in the Alexa Help link in the app. This site has lots of good info; find the thread about Echo commands; chock full of info. I copied it and made a six page PDF for reference. Also, the Alexa app notifies if there is a new feature added. Not rocket science to figure the thing out, since it is basically a glorified internet table radio with extra features. Bluetooth reception is cool. Find all the ways to send music to Echo via BT; e. g. from phones, tablets, even old iPods and computers. A tiny BT transmitter from Amazon can do wonders for the Echo to play from most anything.