Re: How do I use buddypress?
Just to add to this, if you’re using a custom WP theme and you want to add BuddyPress functionality, then you’ll need to use the BP Template Pack plugin:
https://wordpress.org/extend/plugins/bp-template-pack/
If you’re used to customizing themes, then you’ll feel right at home with BP templates and custom loops. Check out the codex for more info.
What hnla is talking about is if you’re using WP 3.0 and you want to add user blogs, you’ll need to add network functionality. Read this post by Pete Mall for more info:
http://developersmind.com/2010/05/17/enable-multi-site-in-wordpress-3-0/