At low gear levels, elemental force and windsong are competing against each other as cheap alternate options to dancing steel; however, that relationship tilts favoring windsong at whenever you're AOEing and/or higher gear levels thanks to an increased focus on secondary stat value.

Even at lower levels you'll want to search for axes, maces, and fist weapons that have a speed of 2.6. Do your best to stay away from anything faster than that, just like daggers. Always be hunting for Agility-based gear which can come with any variety of secondary stats.

Leveling as Enhancement should feel fairly instinctive. You'll obtain a good slice of your main rotational abilities after you focus on Enhancement and will still gain your damage and utility abilities as you level up.

If you have suitable Shaman weapons and you're far enough advanced in Wrathion's quest chain, then you should use an Eye of the Black Prince on each of enhancement Shaman weapons to add a socket. This is not mutually exclusive with other weapon enchants, thus you'll also want to use Dancing Steel as the best raiding enchant for either weapon.