I don´t know what exactly the term means - but I think study level means that it is necessary to read the handbook, it is necessary to watch YouTube videos and write notes and learn how to handle the systems. Being impressed by many many detailed gauges that need to be monitored closely otherwise an engine failure awaits, and fine little details everywhere and a 500 page PDF handbook.
Not study-level means for me turning the ignition-key clockwise and that Cessna (or any other GA) is ready to go. 