The French Braid
(Tip: Find a diversion while your hair is getting styled. I personally recommend eating)
The Classic Pig Tails
Version 1: Soft and Demure
Version 2: Pippy Longstocking
When your hair gets long enough:
The Pony Tail
The Twist
(Bonus: How to comb the nonexistent hair of a sleeping man)
Finally, don't forget a hat for those bad hair days.
Any other ideas?