The document discusses the deep web and dark web. It defines the deep web as parts of the internet that are not indexed by standard search engines, including private social media content and online banking. The deep web has different levels, with higher levels like the dark web only accessible through anonymous networks like Tor and requiring special software. The dark web is known for illegal activities but also has some legal uses. The document provides instructions for accessing the deep web through downloading Tor browser software to browse anonymously.