Ya know, GASE brings up a point about common sense. I do challenge the point, [though not GASE, seriously] that common sense in newer rides is not always adequate without some knowledge.
One tangent to consider is that manuals may even be detrimental at times~~~~~~~~~ In that they may overload you with information in some areas, sending you all over places that don't need visiting.

Thusly, some knowledge and some common sense, and IMO some wrench-time can at times be as useful, if not moreso, as a manual.
K, there's my philosophical bent on it all, LOL.