@Uri Tsairi: If you are installed Joomla on your server, then you can't install quickstart package. So just follow the document to see how to install the template for already website.
But if you are going to build new website, then you should install quickstart package. So you just remove all files in your server, and upload quickstart package in the folder /public_html/ and follow the document to install it.
@Scott: Thanks for selected our template. Here are my answers for your questions:
1. The map is background image, you need write custom CSS code to remove it.
2. Yes, but you need write custom CSS and also JS code to make sticky menu.
3. Yes, you also need do custom work to make it work as you want.