content: I didn't either when I first started using Tor. It's basically when I'm browsing privately, you might know who I am but you have no idea where my traffic is going but when I'm browsing anonymously, you might be able to see all my traffic but you have no idea who I am. Tor gives you anonymity but actually makes privacy potentially more difficult; the exit nodes can see everything you do (this of course does not apply to onion sites which do not use exit nodes).