Go for the speyside malts for now if you enjoy light and sweet.
There are 3 main types: sherry cask matured, bourbon cask matured and both.
I gravitate towards bourbon-matured because they are light, sweet, fruity and woody.
Sherry-matured malts are floral, winey and if you get one under 30-40 years it'll likely have hints of sulphur in it, which I can't stand now. However I must point out that when I was in your position, I could not pick up the sulphur very well and didn't mind it.
Some of my favorite speyside (or speyside-like) malts:
-Tomatin (fave is 30)
-Glenfiddich 18, 21
All that being said, I highly prefer highland malts. They generally have a perfect mix of both extremes. On one side, speyside is light and sweet but it lacks substance and with many of them they are just like a lighter bourbon, so you could just save your money and buy the bourbon. On the other side is Islay and they are just too aggressive for me. Highlands tend to mix sherry, bourbon and peat smoke in just the right proportions for me, so I enjoy them the most.