The root page of your website is the page which contains all other pages. Reason for this is that the root page will contain configuration templates and other stuff that will apply to all other pages on the website. As TYPO3 will follow the page tree when displaying a page, it will always come across the root page and thus the configuration on it.
Why not use the "TYPO3Buddy" page? First of all, this isn't a page, because you can't put content on it. It's a container for the entire TYPO3 installation, as well as records such as backend users. Second, if you want to create a TYPO3 installation with multiple domains (yes, that's right, manage multiple websites from one TYPO3 backend!), you will need multiple root pages; one for each website. We won't cover that in this tutorial though.
Back to the root page of the TYPO3Buddy website; this is not a normal page, but a short cut to the home page, because the root page won't contain content that will be displayed on the website. The type of the root page will be set to "Short cut", and the short cut will be set to the "Home" page, by clicking the the map icon and choose the Home page as the short cut destination:
Always save your changes by clicking one of the save icons (6.x) or the save button (7 and higher)!
Furthermore, you need to indicate that this page is the root page of your website by clicking the "Behaviour" tab and check the "Use as Root page" checkbox:
Your root page is the base for the rest of the website and will contain configuration options and other stuff that will apply for the entire website.
You're also going to put some code in the Typoscript configuration box:
buttons.image.options.magic.maxWidth = 1920
buttons.image.options.magic.maxHeight = 1080
buttons.image.options.plain.maxWidth = 1920
buttons.image.options.plain.maxHeight = 1080
By default, TYPO3 limits the image size of the images you can add to your website with the rich text editor (RTE). Why? We don't know. Probably a rudimentary thing, from times that bandwidth was expensive. This code overrides those limitations. Make sure you'll end up with the following:
Please note: the need for a general storage folder has been eliminated in recent TYPO3 versions! So you don't have to set a general storage folder. When you want to use Templavoila Plus though, you DO need to select a general storage folder! This is only possible after you've installed the Templavoila Plus extension and additional required extensions.
Save your changes.