Steel tongue drums by nature are easier to play than many other instruments. 

The following scales are good options for people who are new to making music.  The reason these scales are more accessible for beginners is that the notes and chords found within the scale tend to be more familiar to the ear, which makes it easier to pick out melodies and chords.  

These drums are by no means the only options for a beginner.  This is just a helpful place for you to start.  Regardless of skill level, best advice is to always choose the scale that stirs your heart the most.