You already know it: You put the camera's manual nicely in the box of the [Nikon D90-> nikon] and then you have to look something up at some point. Before I rummage through my stack of boxes in the attic, I prefer to look for a [PDF manual-> pdf] for the D90 and actually: You will find it on Google!
To save you the hustle and bustle: Here is the direct link to the PDF.
If you don't like the manufacturer's manuals and prefer a nice book with great practical tips, this tip is for you:
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.
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