What is encryption?
basic form of encryption but you get the idea.
How do we encrypt?
Update October 2015. True Crypt has a new exploit and is not recommended any more.
Another program that i like and have success with and is free TrueCrypt. However it is not supported anymore but is still downloadable.
Cloud encryption? I use a program called “Boxcryptor Classic Which have a free version or US$ 44.99 for the personal addition.
The reason i picked this program in particular is because of its very cross platform (Windows, Max OS X, Android, iOS, Windows RT and Linux) and supports many different cloud services. So you never run into a situation where you want to look at something on your phone, tablet, computer or laptop.
Next month will be on passwords.