An easy step for Download Alexa App For Alexa Setup and Echo Dot Setup. you need to follow a few steps. Firstly, Download Alexa App From your Smartphone, PC, or tablet device app, and when you go to the app store type in Amazon Alexa App then Download it and install it. After that, open Alexa App and sign in with your Amazon account. After that, you can set up the Alexa app.