L lenses for a beginner

There's no doubt about their advantages, but as another poster paraphrased Michael Reichmann, "Most lenses are better than most photographers". That's why I suggest working with the kit lenses for a while to see where you need something better.

I saw in another post that you also have the 28-105 and 100-300 lenses. Assuming these are Canon's USM models, they're halfway decent lenses, too. They were the "step above" lenses in their day. They don't have IS, however, so be careful about your shutter speed when hand-holding them. That said, they're also pretty "mature" designs, and even the newer kit lenses can hold their own against them (not counting the wretched 75-300 non-IS that keeps showing up in Sam's Club kits because it costs practically nothing. The 100-300 was this lens' step-up.) But the build quality is great.

--
- Woody -
Equipment: Enough. For now.
Quote: 'The only thing some people will believe is their own eyes. But in the realm of the quality of a printed image, is there really anything else that can be believed? '