Ditto what George2615 said- if your garage is likely to be cold in the winter, "normal" fluorescents won't work, or will take forever to warm up enough to light off completely.
I used a combination in my garage: four 26W CF bulbs on two switches, followed by what I could find inexpensively: three 8-foot doubles, and one 8-foot single. All are on their own pull-chain switches. Later, I added two more 26-watt CFs in sockets, also with pull switches. That way, even if I turn on both switches when I enter the garage, I have reasonable light and only a bit over 100 watts. I can then pull chains to get more light where/when I need it.
I also used the outlet-on-the-ceiling route, but used "4-holers." That way, I can easily move light fixtures around later, as the garage evolves....:laughing:
One of the biggest favors you can do for yourself is to get some white paint on the walls & ceiling; makes a HUGE difference in how the light gets spread around. I used el-cheapo $7 Home Depot 7/16" wafer board and slapped a coulpla heavy coats of white primer on them. My garage is 32 x 32, but (unfortunately!

) I went with an 8 foot ceiling. (Wish I had more height now!)