I love the generic advice everyone gives.
I am a member of a Whisky club and I think the only thing we all agree on is that we all like our whisky in different ways (but never with more than a splash of clean water)
One bit of advice we were given was that if you do have ice you should use bottled water and make sure you wash your icecube trays (when was the last time you washed yours?) it is contaminates that give you a hangover.
The range of whiskys is stunning and they all taste different. Japanese whisky is great, so is Irish - but both over priced compared to scotch of a similar quality (at least in the UK). Indian Whisky is surprisingly good, unfortunately I can't say the same of English whisky.
Best advice is try them all - or just stick to one you like.
Just because you don't like one does not mean you won't like another and what one person raves about you might hate.