Shaman Tradeskills
Tradeskills are somewhat less meaningful for most shamans as opposed to class such as Warlock or Priest which gain some of the best gear in the game through crafting. However, that doesn’t mean it’s all unimportant, and for a tradeskill capable of crafting reasonable armor for your shaman, invest in leatherworking.
Oddly enough leatherworking allows you to make mail armor 40+, obviously intended to suit the progression of shamans, hunters, and any other leather wearer gaining access to mail at 40. I personally preferred to simply use quest items or PvP epics as opposed to crafting gear, but that’s not to say it’s not useful.
Money makers are the three staples, Mining, Skinning, and Herbalism. Find everything you possibly can and sell it all to make massive amounts of gold, this applies from level 1 all the way to 80. People are lazy, you profit from this.
Finally, despite the fact that you possess healing spells, First Aid is always a good investment, and at the very least you become slightly more mana efficient even If you don’t really need it, unlike some other classes (warrior) which definitely need First Aid.