Hi Frank, Welcome to the UU Forum.
First think before you buy, you'll need to figure out what size uke you want to buy. The three most common are CGEA tuned Soprano, Concert, Tenor. Or, go with a larger Baritone that is tuned DGBE. The ideal way is to try holding and strumming the three sizes. But if you can't do that, then listen to ukes in each size and go with the one that you like the sound of the most. Lots of big people play the diminutive soprano and many small people play the tenor. Or you can start with the concert that is an easy size to start with.
Do some research and read and watch unbiased and un-sponsored ukulele reviews. For instance, those found on UU Member ChoirGuy's site:
http://ukestuff.info or Barry Maz's site: Gotaukulele.com Both have many reviews of ukuleles at various price points, sound samples, and tips and information. Southern Ukulele Store and Hawaii Music Supply's TheUkuleleSite.com have comparison videos on ukuleles they sell. Not totally unbiased, but informative.
Several YouTube videos about buying your first ukulele. Again, some of them are sponsored or put out by ukulele makers.
Searching for a new ukulele can be a lot of fun. It can also be a bit bewildering with so many choices out there. But it helps if you can ask the right questions as you look for ukes you like.
Ask away here and other places, but have fun.