How do you add a function to a filter hook?

In which table is a user's email address stored in a default WordPress installation?

When adding a link to your blog, what is necessary for optimal search engine optimization and user friendly experience?

What type of installation allows for multiple WordPress Sites/Blogs on one WordPress Installation?

The default user role for new user registration

What is the WordPress Codex?

In a manual installation, wp-config-sample.php should be renamed to ______.

Will define('FORCE_SSL_LOGIN', true) force SSL login and admin sessions?

add_cap() is a public function or a class method?

A user with role = 'author' can moderate comments, but only on his own posts

Which hook execute-first?