Almost 2 years ago when I got my dSLR, the best advice I was given by a some friends was to get a 50mm Prime lens. These are just great lens, they let you give your attention to the photo. By thinking about where you take a picture from instead of playing with the zoom ring.
This picture is from a walk last Xmas with the Canon 50mm f/1.8 lens, it’s just great lens opticily. Plus it currently costs less than £70.
A recounting of this advice comes care of the new Tack Sharp podcast and website.