I highly recommend actually staying in the 20-60 range zones until you ding 62. The reason for this is that despite getting a slight penalty in experience for being over-level, the advantage of having flight will more than offset this. That, and WOTLK and TBC zones are the slowest part of the leveling process. Minimizing your time there as much as possible is worthwhile.
That being said, there are occasions when a little kindness is not unwarranted. A typical example is a new player who just dinged level 20. They are suddenly confronted with a whole set of relatively expensive skills at his or her class trainer, and the cost of mount and riding training, and needs a small amount of money to learn those new skills. Likewise, sometimes one sees a player who, just by the way he or she walks, is clearly a new player. Kindness to non-whiny, well-intentioned, legitimately inquisitive newbies is karmically rewarding, and one should not worry about shelling out an occasional boon to such players. Remember, at that level, a few gold can go a long way. Heck, even a few older bags that you have lying around collecting dust in your vault will often be much appreciated.
Be cold-blooded about admitting that you've taken a bath on an item. If you bought that sword for 5g, listed it for 10g, and the listing cost is 2g50s each time, after two times it had better sell just to break even. Once you hit that point, don't keep listing it over and over in desperation trying to make something off the AH. D/E it, or vendor it, and move on. Lesson learned. Don't get trapped in the fallacy of sunk costs.
I like to spend as little time as possible on transmog. 1-3 hours of farming a week is about all I can stomach, and I can stomach even less of it on the auction house. When you've got a thousand items listed, cancel scans get ridiculous. As transmog is best taken as a method of making passive gold over time, with little pockets of effort thrown in, do not waste your time undercutting constantly. Instead, adopt an approach that allows you to just post once or twice a day.
“In searching for inspiration for how that might unfold, classic RTS roots felt like the perfect place to turn,” said Hazzikostas. He later explained that your first job will be to get your team's base fully-functional which will require you to gather resources such as "lumber or gold" to upgrade town halls. You'll also need to clear supply lines of foes in order to allow "peons to do their thing."
“That’s the impetus behind everything, is to just make sure that players feel like things that they do in the game will have great consequences or great victories or whatever it’s going to be, right? Ultimately, our job is to create a world and environment and mechanics that support all that stuff. And however the players choose to make their choices is really up to them.”