The Kindle reading application can be used on all computers and mobile devices without the need to purchase an actual Kindle. With the application, you can download and read any Kindle book. Amazon offers a deal a day; todays offering is the Best American series. This is from Amazon:
Kindle Daily Deal, February 25
Today only, a set of seven "Best American 2011" anthologies is available for just $1.99 each (77% off yesterday's price).
Each day, we unveil one Kindle book at a specially discounted price. Check back daily to see what's next. Deals go live at approximately 12:00 a.m. Pacific time and run for 24 hours.