I was given Ukulele for Dummies for Christmas. I'm so glad I was.
I consider myself an intermediate player, but I'd got into a rut and didn't know how to move my skills on. Most ukulele books out there are either for beginners, or for advanced "finger pickers". If you're beyond beginner but still need to learn a lot more, there's never been a lot out there for you.
Not a problem any more!
This books covers everything! If you're a beginner it starts you out with everything you need to know to get playing. For intermediates it takes you on to more complicated strum patterns, and other effects such as chunking, as well as introducing you to reading music notation. If you're more advanced yet it takes you through some more advanced picking techniques and will give you some unusual exercises to really test your skills on (how about "Greensleeves" on the uke?).
There's even a section on ukulele maintenance, such as changing strings and basic troubleshooting, and introductions to famous uke players - so you know who all those people are that get mentioned on uke forums!
And for me, what I liked the most is that the songs you play in the exercises are ones you might have stood a chance of hearing at some point! Most beginners ukulele books seem to expect an intimate knowledge of American folk songs. If you're a Brit or under the age of 70, there's a liklihood that you've never heard of the song, which makes learning doubly difficult. Although there are still some of these songs (hence the dropping of a star), there are audio tracks of all of the tunes, so you can hear what it sounds like. And let's fact it, who can argue with learning how to play 3/4 time using "House Of The Rising Sun"!