At first, I was a little confused when a friend of mine gave me his Course ID as I couldn’t find where I needed to input it to start playing his level. Turns out, it’s actually quite simple, but silly me didn’t see it at first glance. So I figured if I was having trouble finding it, then it may pay to share for others also struggling.
If we’re starting from the main screen, select ‘Play’ and then ‘Course World’. Once into the next screen, you’ll need to click on the magnifying glass that says ID, just above your Avatar Maker and below the three lines in the top-right corner. Input the Course ID and away you go!