Windows SharePoint Services provides your team site with document storage and retrieval, with check-in and check-out functionality, version history, custom properties, and flexible, customizable views. Your team members can easily find and share documents and other files.
Document libraries are collections of files that you share with team members. For example, you can create a library of documents for a specific project. You can store any type of file in a document library.
Picture libraries provide a simple way to share and organize digital pictures. For example, an organization could create a picture library for marketing graphics — providing a single location for team members to view, share, edit, and download corporate logos or other marketing material.