Most uke players settle for the same old strummy-strummy-strum-strum — and most uke players sound like, well — most uke players.
One of the biggest leaps you can make in your playing prowess is to add finger-style playing into your bag of tricks. The great thing is, any song that can be strummed, can be played finger-style instead. This adds a huge amount of variety and excitement to your playing, since you can play in either style, or mix and match.
This is the best book I’ve been able to find on finger-style uke. In fact, I like it so much, it’s the book we use in Danno’s Ukulele Book Club (details here).