Congrats on getting yourself a new 'ukulele. Playing is pretty easy if you're a guitarist, it's just the top four strings capoed at the 5th fret.
The best thing about the uke is how light, compact, portable, and fun it is. Break it out at a summer BBQ, at the park, at the beach, or anywhere, and you'll have a blast.
If the re-entrant tuning is giving you the fidgets, you can always slap on a low G string to give it that bass note. But whatever you choose, playing is fun, despite what the haters say.