Level 40: buy Apprentice riding skill and 60% ground mount
Level 60: buy Journeyman riding skill and 100% ground mount
Level 68: Do not buy Expert riding skill, get it for free when you train flight form at trainer like any other skill; laugh at friends of other classes
Level 70+: buy Artisan riding skill and either complete extremely difficult quest for swift flight form or plunk down cash for epic flyer
Is this right?
I know there's a bazillion places that talk endlessly about all this but I need to make sure I have the summary straight in my pea brain. I just hit the Outlands (yay me) and as I'm a casual player and don't have time for raiding and whatnot, from now through the level cap and beyond I'm going to focus mainly on making sure I have my riding skill, professions, and gold stash where I want them when WoTLK comes out and if I can make any extra between now and then, farming gold to fund alts.