The trail is fairly clear through most of this route. However, figuring out exactly where you are inside the canyons can get tricky so you ought to have good map skills. Since this is a long hike in a desert canyon I'll focus on where to find water.
The trail begins at the top of Woodenshoe Canyon and drops in elevation fairly quickly, through aspens and firs. About 5 miles down the trail, Cherry Canyon enters from the east. This canyon contains your first water source. Good camping and water is available for the first 3/4 mile up Cherry Canyon (some small pools, one portion was running just a smidge). There was an old sign propped against the tree that marked the entrance but I wouldn't count on it being there next time.
Continuing down Woodenshoe, about a mile after Cherry Canyon, there are some ruins on the east side of the canyon wall, and a mile after that "Keyhole Arch Canyon" joins from the east (this canyon not named on the map, but it has a keyhole-shaped arch about 1.5 miles up-canyon). About 1/2 mile up Keyhole Arch Canyon is a very small spring-fed waterfall (more like a cluster of drips). There are several smaller canyons that come in before Keyhole Arch Canyon so watch your map closely.
After Keyhole Arch Canyon, hike another 5.5 miles down Woodenshoe Canyon and you'll reach the Wates Pond area with water and decent camping. You'll first pass a scummy deep pool, after which the water becomes more and more abundant, even running a bit. Wates Pond is the last and deepest pool, with willows, a small sand bar on one side, and a short fall at the inlet. The water disappears quickly after Wates Pond. Water skeeters, water snakes and toads love to hang out here. You may even see some resident Blue Collared Lizards.
Only a mile later there is another water source: a spring running down the east canyon wall. It's indicated on the left edge of the Warren Canyon map near the elevation point marked 6832. It creates a "drip waterfall" that you probably will hear, but keep a eye on the canyon wall anyway. Some well-used campsites are nearby.
A mile after the "drip waterfall" spring, Dark Canyon merges with Woodenshoe Canyon. Turn right and begin hiking easterly up Dark Canyon. About 4 to 4.5 miles up Dark Canyon, inside a horseshoe bend, there is a spring marked on the map that was all but dry (had maybe a cup or two of water in a tiny pool someone had dug out!). About 3/4 of a mile later there are some good ruins on the north wall.
The next spring is approximately 1.5 miles after the ruins. The entrance of Warren and Trail Canyons from the south and north, respectively, herald the beginning of this spring. It's also marked on the map and has plentiful water (relatively speaking), a healthy community of toads, and good campsites on a small hilltop near the head/beginning of the spring.
About 4.5 miles after this spring, you'll pass by Poison Canyon, entering from the northeast. It's a major canyon with a trail so don't take it by mistake. Instead continue due south and in 3/4 mile you'll reach Rig Canyon, the next water stop. It's marked by an obvious corral and wilderness boundary sign. Go up the Rig Canyon road and in a mile or so you'll come to some old rusted-metal drilling machinery and wood pieces. You'll see some stagnant water here in the canyon bottom, but further up, maybe half a mile is slightly better water. We had to dig out a pool and even then it wasn't stellar quality.
As an alternative water source, keep on going up Dark Canyon instead of going up Rig Canyon. In just over a mile past Rig Canyon, as you come close to the entrance of Peavine Canyon, you'll find more water seeping out of the creekbed. This might be a better water source than Rig Canyon.
Turn right into Peavine Canyon on a 4WD road. Don't miss it; watch your map.
About 6 miles up Peavine, the canyon splits. Take the trail going up the south canyon. There are other trail junctions in this area, so here's how get the right trail: hike along the road until you reach an old corral sitting a few feet off road (can't miss it...it's also marked on the map) . When you reach this corral, backtrack a few minutes and you'll see a trail headed up the south canyon.
Several miles from the corral, in upper Peavine Canyon, you'll again see water. As you hike it develops into quite a healthy little stream; the best water of the hike, but certainly no pools large enough for a dip like our guide book suggests. About 5 miles from the corral you'll find a great camping area: small aspen-lined meadows with good water (complete with many large cow pies to enhance your experience -- anyone else want to get these stupid animals out of the wilderness?).
Continue up the trail from these meadows and just over a mile later you'll reach the Peavine Trailhead. If you didn't leave a car here you'll have a 2.5 mile hike back to the Woodenshoe Trailhead along the same roads you used on the drive in.