There are three (3) tiers of membership to San Francisco Data School:
Public
Anyone coming to San Francisco Data School that is not a registered member with the site. Public members have limited access to content.
Registered
Anyone who has registered with San Francisco Data School via the "Login / Register" link in the top-right of the homepage. Registered members unlock additional pieces of content.
Premium
Anyone who is currently paying the monthly subscription for San Francisco Data School. Premium members have all access to content, datasets, and data tools powered by San Francisco Data School.