If you haven’t visited the “ukulele pub” at Cosmos yet, here are a couple of reviews to give you a taster:
Here’s a super forum to hang out in with like-minded people.
Ukulele Cosmos is a well-known forum with leaning to the UK but all nationalities are welcome. There’s also a good selection of interesting links to other ukulele related internet resources. Good site with lots of friendly people.
Useful and friendly bulletin board run by UK ukist Alli Bee though it is popular with international contributors. It has many useful sections including recordings, technical, theory, luthier, banjo-ukes as well as general uke talk and even a section for just sounding off on any topic.
I have updated the previous post to make the advice about “internet security”, “safe browsing” and avoiding getting ambushed by malware more general.