depends what you want they all have a place.
Wordpress if you want a blog
joomla if you want a little more, you're new to building sites and Joomla does what you want - but I pretty quickly found it's permission system limited which limits multi-role type sites where you need people to not just be either "users" or "admins" but rather you require user that are "bloggers", "event posters", "user managers", "moderators" etc.
Drupal... this can do all of the above, and more, and more, and workflow... but its got a steep learning curve as an admin looking to do these things... it is time well spent though.
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