Thank you for your question. In Joomla 3.0 these options are in the same place for the most part:
Login to the Admin Panel -->Roll your mouse over Content and click the Article Manager -->Click the Options button.
You can then choose what items you want to Hide/Show, including the hit counter.
Also here are some guides I found online regarding your questions:
1. Remove the We are volunteers slogan.
2. How to Hide Categories.
How to show create date, which also shows the setting for hiding as well.
How to hide the article author.
If you have any further questions, feel free to post them below, or contact live Tech Support.
They are available 24/7 via:
Phone: 877-595-4482 x2
Chat (there is a link on the top right).
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