I was beginning to have my doubts about the effectiveness of Tor networks after finding out the NSA works covertly with tech companies to insert weaknesses into encryption protocols. And who knows which government has the same bag of tricks? But after reading the NSA's leaked report on its struggles to penetrate the Tor network for many years, I'm satisfied Tor remains the safest way to communicate anonymously online. This is important in places where being an atheist is a danger to the atheist's safety and freedom.
Tails Linux helps you to use the Internet anonymously and circumvent censorship almost anywhere and on any computer, but leaving no trace unless you ask it to explicitly. It is a complete operating system designed to be used from a DVD or a USB stick independently of the computer's original operating system. It is Free software based on Debian Linux. Tails comes with several built-in applications pre-configured with security in mind: web browser, instant messaging client, email client, office suite, image and sound editor, and more.
Tails is secured using Tor, a free software and open network that helps defend against network surveillance by bouncing your communications around a distributed network of relays run by volunteers all around the world. Tor prevents anyone watching your Internet connection from learning what sites you visit and Tor prevents the sites you visit from learning your physical location.
There is a learning curve with using Tor, but it is not difficult. I would imagine the interest in and capabilities of Tor networks will be expanding as news of the NSA's difficulty with it starts to spread: this is a huge endorsement.
Also, because it is based on Debian it is rock solid and can run with minimal resources at full speed. I have a dual core, 1 GB Ram desktop from almost a decade ago and it rocks. Back to tails, does it use Firefox or Iceweasel?
Also, try to get Ghostery, Noscript, https everywhere, among others to prevent being tracked online.