I want to start backing up my files online. I need suggestions!

I’ve got a bunch of large files (5 GB +), as well as some standard word/excel documents that I need to keep safe. I think online backup or online storage is the best solution because it can be relatively inexpensive (or free), and it’s usually easy to use. I want something that will backup automatically, or with little effort. And I want to be able to easily access my files if needed. I would like some suggestions on where I should go? What companies are good? What should I look for before buying? Is there a difference between what I can buy and what is available for free?

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