Changing the margins in a Google Doc can be useful for stylistic purposes and to fit more on the page.
The easiest way to delete a page in Google Docs is to simply use your keyboard to erase the page, but there are other formatting options.
But if you use Google Drive, all your photos, videos and other random documents might be eating up the 15GB of free storage Google Drive provides. If you run out of storage, you'll see a message ...