Amazon's third annual Prime Day was its biggest one yet.

The company sold more during its massive sales event, which lasted 30 hours from July 10 to July 11, than it did on both Black Friday and Cyber Monday.

Out of the hundreds of thousands of discounts available only for Prime members, the number one most popular purchase was the Echo Dot. Prime members also bought a record number of Echo speakers, Fire tablets, and Fire TVs — all of which are Alexa-enabled devices.

In addition to the basics, here are 27 useful Skills, or tricks, that you should know about if you're a new Alexa user.