RNAV for PPL
I observer that the skills test, which I have to pass to get my PPL back, has one thing in it which I never did the first time round, viz some basic RNAV.
From the test syllabus document it looks like it's just there because "it's silly to have all those avionics in the plane and not know how to use them"; chatting with my instructor this morning we both seemed to think that if a low hours PPL is really lost and in trouble, due to failure of visual navigation, the most useful radio navigation aid is the VHF radio with a controller in front of a radar screen on the other end.
However, seeing as I've got to learn this to pass the test, what are the current recommendations for RNAV books, given that I'm unlikely to want to do the IMC rating? And is there any value (either positive or negative) in practising RNAV with a PC flight simulator?