Glad to have you here on Hive.

Communities seem to work the same on Hive.

The tribe tokens, I've been noticing they are automatically beeing gradually transferred and staked over time every day or so as shown in the new Engine portion of my wallet. I'm not sure exactly how to transfer over the rest of my tribe tokens, or if I should just leave them there. Not sure if tagging tribes is activating rewards for posts the same as before, because I do not know how to view incoming token rewards, but I've been using those tags the same as before.

Peakd.com is the website for using enhanced features (replacing steampeak).
Hive.blog is the standard website replacing steemit.com.
engage.hivechain.app is a new app to assist with responding to mentions.