How to get free Steam key from Humble Bundle and add the key to Steam Library

This video is intended for people who want to know how to get (redeem)free steam keys offered by Humble Bundle Store and how to add these steam to their steam account or library.

This month Humble Bundle is offering steam version of X-COM: UFO Defense game for a limited time, if you are interested immediately grab a steam key .

[jasonharvote]

If they are giving free steam keys whybare they asking for your steam user and password? Theyll be able to steal your steam no?