Two good articles on how to protect your digital privacy
1) In his first email to Laura Poitras, Edward Snowden wrote, "Assume your adversary is capable of one trillion guesses per second.” He meant that pass-words now need to be seven-word pass-phrases, carefully constructed.
The first article teaches you how to do that.
Title: Pass-phrases that you can memorize - but that even the NSA can't guess
The second article deals with encrypting the files on your laptop, (for which you would need to use a good pass-phrase) so that if somebody got access to your laptop, your files would still be safe.
Tells you how to do it, for Windows, Mac OS X, and Linux.
Title: Encrypting your laptop like you mean it
Both from The Intercept, author: Micah Lee