Since getting the 350D (and for a quite a while before) I’ve been trying to read as much as I can about how best to take photos, what all the settings do and how they complement each other, and how accessories can be used to give effect to a photo.
There are, naturally, plenty of tutorials on the Internet, but one that stands out is Neil Turner’s. I happened to come across his site via the excellent DPReview website, which also carries a series of tutorials.
Great stuff for getting into photography.