Hi there,
No you are NOT …LOL 
Yes, Not too difficult You can read the Data-sheet and look at the examples to gain some understanding.
You can generate an interrupt at a certain angle of tilt. AFAIK.
Look at some of the demo’s I posted about the IMU. It’s all about the configuration Register and the values you write to it. There are no High level OUT of the can LIBs, Examples do exist, AFAIK. but I haven’t searched for it.
Also you can use a filter with the RAW floats to get a “YAW” value that also can be utilized.
HTH
GL 
PJ 