Sometimes the answer is right there in front of you. 

This is definitely one of those times and I think you will love it. The Google Chrome team put together this easy to read ebook (guide) to explanation many of the things we use daily online (well, I do, but I think you do too) and if we aren't using them daily, we should. Please take a few minutes to peruse this book and be proud of the fact that you now know what cloud computing is and your spouse doesn't! 

http://www.20thingsilearned.com/home