http://booksbxfx6ciebutmfvorkotgfbwcwp24qpcxyuyen355z4eknxbzuqd.onion/dark/Laden_Kash_-_The_Dark_Web_%C2%B7_Exploration_Of_The_Deep_Web/THE_DARK_WEB_2.html
The link to the homepage of the anonymity project is here. I won't link to the direct download page like others do, as it is known to have been compromised in the past. On the home page of the Tor Project, look for the Tor Browser and then download.