a different approach here.. albeit with bmw nav5 . the secret to understanding the basics of any nav system is to get completely lost ...completely, not quite sure won't cut the mustard for this method. a time limit will help also, a proper important one that is.. like a hospital appointment or closing time at the pub, not i'll master this in ten mins..
when you have to pull in at the side of the road and push what you think will be the correct buttons, with mates giving helpful comments...thats when you learn how to use a sat nav.... a certain amount of bluff may be called for when you take off again, just be confident and avoid doing an actual u-turn then when you arrive at your destination slip the phrase "lucky we had the 'aul sat nav" into the conversation a few different times.
ossian was the only real ale i ever took to..lovely, real ale not being much of a "thing" over here but hophouse 13 is a very similar larger,
i don't drink anymore, but then i don't drink any less either.