Nissan Repair: intake manifold, head bolts, chain links

Question
i cant  get the intake manifold off of my 1995 sentra 1.6
i removed 8 bolts to the head and 2 on the bottom. is there any hidden bolts? im trying to remove the head because its cracked.also wil i have to remove the cams to get to the head bolts? or is there a special tool? also when i set it to tdc the marks on the sprockets dont match up with the silver chain links is that okay as long as i mark where it where it is thanks sorry for all the questions.

Answer
look for the unusual bolts that arent close to the intake, like allen bolts. They are on the intake.
The chain links are not important as long as the sprockets are on their marks. You should have to remove the cam to get the head bolts. But, dont worry. Its not that difficult. Look at it as,"FUN".