CUE has a vibrant and friendly community here are some links to some 3rd party pages you may like to visit.
Please note that we are not responsible for the content of external websites. The inclusion of a link here should not be understood as an endorsement.
CUEniversity is a developer-supported project created by PenPinapplPen. It's an archive containing as much information about the CUE Cards and the CUEniverse as possible.
This community is for general discussion, strategising, humour and Everything!
Helpful youtube channel
Now, this ones not really 3rd party, but it's certainly community-run. It's probably the best place to get started. Full of friendly players, it's certainly worth checking out.
You can also visit the following for up to date news from the horse's mouth