Per user you have 1Tb of storage for personal files including storage of versions. Files shares with you do not count up for this 1 Tb.
Community files have 50Gb storage per community. Communitiy Files can not be shared outside a community. Personal Files can be shared with other people, communities or with your whole organisation.
Upload of files can be done via
- Desktop plug-in for Windows or Mac
- Comnctions mobile App
Current maximum file size is 2Gb