The gear drive is the same ans most timing chains. Has a dot on the cam gear and one on the drive gear. There should be a copper spacer to go underneath the cam gear inbetween the block. If you want it to last get a big block cam oil galley pipe plug, they have a small oil hole in it that will spray oil on the back of the cam gear and keep it all well lubed. Put it in the center (main/rod/cam) oil galley.
The two dots have to line up with the cam at the 6 o'clock position and the crank at the 12 o'clock position, then the idler gears go in and you check cam timing.
Degreeing is handled by offset bushings on the cam, hopefully you got those and the lock plate that goes underneath the bolts, holds the bushings in and also if your using a roller cam you'll want to use a thrust button or bearing there. There are several types of those, roller bearing, aluminum and plastic. Stay away from the plastic, they don't live very long.
When you get it degreed, put the lock plate under the bolts, torque (25 ft-lb i think) and then bend the lock tabs over the sides and top of the bolt. If the lock plate is used, you might want to get a new one at autozone or something, they sell them, otherwise the tabs may break off.
The idler gears have a pointed end on the shafts, that goes towards the block. Sometime the block casting numbers have to be ground off in the area that it rests so that it goes in all the way, depends on brand though. If your block has been line honed or bored you may find that a gear drive wont' work, they make one for that application, at least I think pete jackson, moroso and cloyes do.