BuddyPress.org

@ashfame:

I recognize you from the bbPress forums, so I know you know your way around WP/bb!

It shouldn’t take long for you to get up to speed with BP.

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4) Re: modifying menu bar – you don’t need to hack the core file.

Read this:

https://codex.buddypress.org/how-to-guides/modifying-the-buddypress-admin-bar/

You can put custom code in /wp-content/plugins/bp-custom.php to override settings and variables.

7) Blacklisting usernames in WPMU – login to the WPMU backend, navigate to “Site Admin > Options”, look for the “Banned Names” field.

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There are also some good how-to guides as well:

https://codex.buddypress.org/how-to-guides/

Also read up on the global $bp variable:

https://codex.buddypress.org/developer-docs/the-bp-global/

Hope that brings you up to speed!