When I first bought my DSLR (a Digital Rebel XT), I have to admit that I was a bit overwhelmed by all of the jargon that surrounded it. The learning curve was steep, but I think I’ve finally managed to learn the basics. I just wish I’d had this page to help me.
Focal Lengh and Aperture Explained for the Photography Novice:
http://www.photoaxe.com/understanding-the-lens-focal-length-and-aperture/
If you’re anything like me, you’re always looking for a cheap and easy way to light something while you’re trying to photograph it. Most folks are quick to pop their on-board flash up and fire away, but I generally hate using the flash. With that, I’ve become more of an “available light” photographer and, with that, have developed my eye for lighting.
I’ve been looking for a good way to setup a cheap photography “studio” — for portraits, product shots, and a handful of other tasks — and finally found two DIY projects to help me get there: a softbox and a lightbox.
With a little bit of engineering, you might be able to make one box serve a dual purpose … put the flash on the outside for a lightbox, move it inside for a softbox. Throw in a decent portrait lens (lots of folks rave about 50mm f/1.8 primes, usually available for under $100) and you’re on your way to doing headshots, product shots, and whatever else your $50 in lighting gear can handle. 
Softbox: http://lactose.blogspot.com/2007/03/hobo-diy-softbox-for-perfect-portraits.html
Lightbox: http://strobist.blogspot.com/2006/07/how-to-diy-10-macro-photo-studio.html