[Philip Bump posted a guide for] The Atlantic Wire on how to use encryption to hide your activity from the NSA. Except it’s a pretty shit guide. [Instead Micah Lee has a great guide] for the Freedom of the Press Foundation and [Tactical Tech has another nice outline] with guides for good secure software usage.
The latter two guides are far better than the first, but the gist of all of them (and [as I have said before]) is that truly secure communications is hard, cumbersome, and requires both parties to be using it. That latter is the hardest obstacle to overcome.