I suppose most people will agree with Barbara McMartin that the hike is relatively simple. I don't remember the hike as being particularly easy, but it's been nearly six years since I was there.
We hiked over The Brothers on our way down from Big Slide, which we had climbed from Johns Brook Lodge (we'd first gone over Yard Mountain, an unofficial 4000-footer). The day was sultry, after several clear, dry days, and I was wearing my old frame backpack, so I was tired and miserable. My son was seven years old at the time, but he did fine on our hike back to civilization, despite our having climbed Lower Wolf Jaw and Saddleback the previous two days.
The only difficult part of the trail that I can recall was just below the Second Brother; there was a fairly steep, rocky climb to the open rocks. You should have a decent view down toward Keene Valley from there. If your party is tuckered out at that point, it would be a good place to turn around, as the next stretch is pretty much in the woods anyway. There was a good view ahead to the profile of Big Slide from the Third Brother, but I don't remember if Big Slide can be seen from the Second.
Our hike was well before I began using a digital camera, and I don't have a scanner, so I don't have any photos to share. There's a tremendous view of the Great Range from Big Slide, if you're ambitious enough to go all the way.