Before starting please make sure you have Hangouts Chat visible. Please click here to see how to install and use Google Hangouts Chat.
To install the Ottspott Hangouts Chat Bot, search it on the left menu and please type Ottspott
As soon as the the bot is installed, you will receive a welcome message from the bot.
Now you can use the the Ottspott bot inside Hangouts Chat. To invite the bot inside a room, you can follow this quick tutorial: