Are there any apps to learn all the features and functions of the spark without having to fire this bad boy up every time?  I had a few minutes to filmtoday and could not remember how to turn on active track...

Just download the full manual from DJI, sit and read it through, familiarise yourself with the parts and functions. You don't need a simulator, just take your time and learn the ropes 1st.

I think active track wasn't working because I was below class B airspace.. the icon just never showed up.