There are vids on YouTube:
Part 1:
https://www.youtube.com/watch?v=CvMaBZXgSkA
Part 2:
https://www.youtube.com/watch?v=meYzjmpgUtc
Here's a couple of notes and tips from my experience:
The marks on the rear timing belt cover do not exactly match up with the marks on the cam gears. They look about a tooth off; they are all like this. The mark on the crank sprocket should be in the 5:00 position. The important thing is that you match up the lines on the timing belt with the marks on the belt; if those are matched up, the engine is in time, mechanically speaking. Most new belts will have an arrow on it, which should point to the front of the vehicle. They will often have one "dashed" line and two "solid" lines. The dashed line matches up with the timing mark on the right bank time gear (which will be on your left if you are looking at the engine head-on). The two solid lines will match up with the marks on the left bank cam sprocket and crank sprocket, respectively. To get the tension tight, do as follows:
Install the new timing belts around the sprockets and tensioner. Loosen the tensioner nut and let the spring tension take up the slack. Turn the right bank cam sprocket about three teeth in the counter-clockwise direction, letting the tensioner continue taking up slack. Torque the tensioner nut to 35 ft/lbs. Turn the right bank cam sprocket about three teeth in the clockwise position. Using your thumb and forefinger, twist the timing belt at the center point between the two cam sprockets; it should turn 90 degrees. If you can turn it 90 degrees, it is too loose and you must re-adjust. If you can't turn it 90 degrees, it is too tight and will likely make a loud, whine noise when you get it running. Again, adjust the tension, as necessary. Most of the time you won't. If you want, you can install the lower timing belt cover and crank pulley (tighten crank bolt) and start the engine to make sure it runs okay. It will be fine with the upper cover off and you can run it for a little bit without worrying about it overheating without coolant, but I wouldn't let if run for more than 30 seconds. Make sure you pay attention to the timing belt cover bolts, as they are not all the same length.