So ...

On the "General" tab, you can disable/enable posts, comments, author pages, and feed-related features (RSS, pingbacks, trackbacks):

The "Extra" tab will allow you to control several other features like screen options (for your admin area), admin footer text, emoji support, help tabs, and admin greeting:

The "Profile" tab will allow you to customize the profile area for Wordpress user accounts. You'll be able to hide/show various items that users can change on their profile:

Finally, the "Menu" tab will allow you to define how your Wordpress admin menu looks like. Basically, you can choose where your users are taken inside the admin area when they click the "Dashboard" link. Also, you can hide/show icons, separators, etc:

And that's it! You can now use your non-blogging admin area without being distracted by useless, annoying features, menu items, etc.

One last thing ... Usually, a blog will use a blogroll homepage, so if you haven’t already selected a page to be used as your static homepage, then you'll have to go to Settings => Reading to define/select a static front page:

Needless to say, the plugin doesn’t delete anything from your website! It will simply hide those features/items. So if you had posts, categories, comments, etc, they'll become available again when you deactivate/delete the plugin.

And that's it my friends!

If you have any comments, further questions or update requests please don't hesitate to react! Like, comment and share!

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Thanks for your time!