To set your MySQL root password, I forgot to mention that you need to use the following command to do that. Just change "[PASSWORD HERE]" to your desired password. If you need further help, please use the Q&A section.
# Mac: mysqladmin --user=root password "[PASSWORD HERE]" # Windows: mysqladmin.exe --user=root password "[PASSWORD HERE]"
In the next lecture, I'll do a video walkthrough on Windows to show you an alternative way to change the root password. (Should work for Mac, too!)