Welcome -- and enjoy! Relax, you will find out what suits and what does not.
You may like something now and in another few days/weeks/months find out it is horrible.
A lot of whisky drinking in my experience is a sensory event, relating to different memories, and once you find some drinking buddies it will get better and better.
One thing I will say is to watch your budget, and try to stick to it. A lot of posts on this site refer to things which are way out of reach for some of us, we can only dream about being able to afford them-strangely, you might find that you really dislike the most expensive whisky you purchase, which is also a bummer, but dont beat yourself up about it.
Glenfiddich 15 is a great whisky, particularly if you have the solera, which I think pound for pound is the best in the range. I personally dislike Port Ellen immensely, as I do Laphroaig, but I love Caol Ila, Ardbeg and Lagavulan.
You just need to look at the shelves, decide on a price range, choose a bottle you like the look of (I kept on going for ones I did not recognise in the early days, bit tricky now though!), try with and without water to check out the differences, and you will eventually be posting on here like an old hand.