Can somebody help me learn to use Harmony?

I am first time Harmony user and first time graphic tablet user at all. I have only a year to both learn to use it and do my projects so I'm very desperate.. The people that lend me the tablet expect from me to show my work every 2 months, yet the app just closed on me after 5 minutes of doodling- I don't know how to do anything besides scribbling so far..