I got into whisky via a bottle of bells at uni so there really is no right way into it. Supermarket own brands are very good value too. Sainsbury's, Tesco and coop are all quite reasonable. I've not tried other brands but no doubt will be equally good places to start. I've actually found tastes to shift over the years so when people say whisky is a journey I'm inclined to agree. If you really want sweet single malt aberlour can be a good one if you can find it cheap. Personally I find them a bit sickly but other people have enjoyed them at tastings.