If you don’t want to dish out the several hundred for a Kindle until you know you’ll actually like reading books in electronic format, the iPhone Kindle app is completely free.

I don’t recommend testing out ebooks for the first time on a computer. Sitting at your desk is not how most people prefer to read, and pretty much kills the effect of getting to carry the books around with you anyway.

Personally, I loved the iPhone Kindle app enough to completely forgo the actual Kindle.