There is just so much excellent content on the web for space and astronomy, it's hard to find time to look at all the interesting and useful stuff out there. The good news is that you can always find something that's new to you, even if it's been around for a while. I just discovered a cool blog, What's Up - 365 Days of Skywatching (the archives suggest it started in May 2006). Each day there are great tips for what to look for in the night sky, as well as interesting background information and pictures.
Even better, the author of this blog (Tammy Plotner) has written and collected the observing tips for all of 2007 in a PDF ebook available for free download (it's big, 24 MB). You can also buy a printed copy for $25 from Lulu.com, a pretty good deal for a 410 page book.