A lady named Tammy Plotner has produced a free PDF book entitled "What's Up 2007: 365 Days of Skywatching", which follows on from the one she authored last year.
It's related to a weekly column Tammy writes on an astronomy blog site called Universe Today, which looks to be a good place to find information regarding events in astronomy and space, pitched at the layperson.
As one would expect, it's northern hemisphere focused. However, it is beautifully laid out and contains an astounding amount of information that would make it interesting reading, irrespective of where you happen to live.
If you'd prefer a printed copy, you can order one, via the self-publishing site, Lulu.