And while you're in the wp-content folder, where the themes are, you'll also see a plugin folder. If you decide to add any plugins later (there are a lot of nice ones!), that's where you'll want to put them. Check out wp-plugins.net
Anything put in those folders will show up in the Plugin & Themes sections of the admin panel, where you will then need to activate them, and in some cases, configure them.
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