You can add both existing files from outside Alfresco Share and create new files within a site.
Use the Upload option to upload existing files from your computer into the library.
You can also drag and drop one or more files to the library view - even to a particular folder.
Note: In Detailed View you can drag and drop
files into the current library level or directly onto a folder. An arrow will be
displayed when the files are correctly positioned over the folder to be dropped. In all
other views you can drop files into the current library level only. So if you want to
drop them into a specific folder, that folder needs to be open in the library
view.
The Create menu provides options for creating different kinds of content directly in the library: plain text, HTML, and XML documents, as well as three types of Google Docs content (documents, spreadsheets, presentations). You can also create content from a template.