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I spent a year on Linux and forgot to miss Windows
(www.theverge.com)
This is a most excellent place for technology news and articles.
Or you can do like I did and simply put an extra hard drive in, load Linux on it. Then use your old Windows hard drive as a storage drive. For the first couple of weeks it was a nice safety blanket to have.
Oh, and if your PC doesn't have the room inside for an extra hard drive. Make it an external.