You have the perfect motor to "learn" on,and the satisfaction you get
from doing it yourself can't be beat.

When you're tearing it down,as you remove a part, put the nuts and
bolts from that part in a plastic bag and tape it to the part. That makes
it so much easier when you reinstall it.

And as mentioned above, take pictures from several angles.

The real plus in doing it yourself,the money you save can be used to
buy more tools.Woohoo!!!!