putting the motor back together

Installing the cam is pretty straight foward:)(that was humor) Just slide it carefully not forcing it and pay attention to the plane so that it slides in all the way back. If you get out of alignment you can move it around gently but be careful not to knick anything. They also make a handle that goes on the end to facilitate the install and makes it much easier tha last 1/4 of the way.
Not sure what you mean by slots on the crank and cam. There should be timing marks on the crank and cam gears that need to be lined up when installing the set. I believe to be at tdc #1 the marks on the crank and cam sprockets need to be at the 12 o'clock position for both. not the 12 and 6 o'clock like chevy. The distributor should go in after that with the rotor pointing to the #1 cylinder plug wire on the cap.
You should really look this stuff up on the net and get something to print for reference while your doing the job. You might also get some good pics and such to reference. There are also lot's of books that could be helpful too.