The Kindle is one of the market leaders in eBook Readers and encompasses far more than just the handheld electronic Kindle reader device.
Free software is available that will allow you to read your eBook library on your PC or laptop, your iPad or Android powered phone or tablet. Amazon, the company behind Kindle have also recently launched a cloud based service that will allow you to access your library of Kindle books from any internet enabled device.
These additional reading solutions, whilst stand alone as readers in their own right, do particularly complement the Kindle reader. If you are looking for an e Ink based reader but still want wider access to your books, the Amazon solution is very compelling. There is a larger Kindle DX which is only available in the USA or the standard model, currently in its 3rd version and known as the Kindle 3.