Just started my account here, coming over from X, which is either down or locking me out, I don't know which.
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Welcome! We're glad you're here!
CoSo is very different from Birdland - and by different I mean better. A couple of people have given you the link to the help page, which really is helpful, but don't hesitate ask questions here. Add a # in front of the word help and someone (more likely someones) will pop up to assist you.
Jump in and have fun!