Recently here at DC480 con, which is kinda like Defcon, but is a group of people at UAT that get together to hack hardware, hack software and try to educate people about software and other security.
A Net Security major did a talk about anonymizing proxies and how they offer almost no anonymity if one of the nodes is compromised in the Tor network. Anyone anywhere can set up a Tor server and have it log all the data that passes through it. He then went on to show how most of the servers on the Tor network in the US that he was able to find were run off of US Government IP space, and that in countries as Great Britain, Germany, France and others they were being run off of their national government IP space.
All traffic through Tor is unsecured in that any Tor node can log the data. Do you trust the governments that these nodes are run on to keep your data protected, and your identity private? If the first node you connect to is a US government one, and you do illegal stuff, they have your IP, what you did, and everything in between.
I'd be careful of anything done, and would go for better options. Most libraries offer Internet, usually for a small fee. Use cash, and you can use it. Next time find an internet cafe, and so on. Those are better ways to be anonymous and secure. Tor is heavily overrated.