Let me suggest considering something other than canon lenses. Since price is a consideration and this is a first camera, you can get really good lenses at a better price than if you buy Canon lenses. Get more with less, and the quality difference between a good independent lens and a Canon isn't that big.
I really like the Sigma 18-200 DC OS F3.5-6.3 as a good first lens. It covers the primary range you'll want and it's a solid lens. If he's just getting started, he'll probably find he can do almost everything with this lens, unless he has special photography interests like Birds or Macro work. He may not need a 2nd lens to get going, and he'll spend a lot less money than if he bought a similar Canon lens.
As a second lens, depends on his interest. If he's not sure, just buy one and take pictures until he figures out what his second lens ought to be, but if he's interested in landscapes, I'd nudge him at the superwide Sigma 10-20. If his interest is shooting small things on the move far away, the Canon 100-400 (pricy, but you'll need something like it for birds or wildlife); or something like the Sigma 180 Macro if that's his interest.