These are great guys...and im not a pro but these couple tips helped me.
For hanging drywall on a ceiling, cut a 2x4 6 inches longer than your ceiling height, and cut another 24inches. nail the 24in peice perpendicular to the long peice for a DIYer drywall lift. Make two, You and a friend can easily handle some 4x8 sheets, and you wont wear yourself out holding the sheets up.
For a ceiling that has a joist width of more than 16inches on center, use 5/8 drywall. Its thick enough that you wont have to add bracing to hold it up, and its more resistant to sagging over time.
Lay your drywall sheets horizontal. Your tape line will be at a convinient height to work, and you will have the beveled factory edges touching for easy taping.