Questie will tell you where the appropriate level-appropriate quests for your particular faction are across the globe. It also reveals where to locate the minimap and map goals. When you begin to advance to higher levels, going to the opposite continent or to Burning Crusade Classic Gold other areas which aren't readily apparent become essential for a smooth leveling experience. Questie is a fantastic tool to help you find the best quests to your level.
Additionally, the weapon you choose to use is also extremely important. If your weapon is levels behind, you are going to be struggling to kill levels appropriate mobs. Classic/TBC is never easy to fight multiple enemies at once. This is exactly how it was designed. While leveling up is more enjoyable, it can be frustrating for players who do not have the right mental attitude.
I think the levelling, let's focus on this aspect, is slow, I'm not going to deny that it's been designed that way, but I just don't like the consistency of it. It's not as smooth as it could be the Hunter class that has high DPS. I am lacking mana, gold and damage. Because of my tiny mana pool, I'm unable to kill every mob. When I kill an enemy, I have to stop and replenish mana and health. I have only a couple of useful skills that can let me survive and to deal with damage, probably this will improve in the future but I am beginning to wonder if I'll not stick with Wow for long enough.
You'll almost have to hunter to level up. You must ensure that you have all the skills you need. You can download a threat gauge to fake aggro if you're planning to to pull it off your pet. This is a classic. You shouldn't be a swarm of spammers throughout each fight. My other hunter enjoyed a smooth experience. I would suggest adopting a mind set that you sometimes just need to bring your pet in and then only auto-shot for a handful of mobs, until your mana regenerates in its own. My hunter simply puts the serpent's sting on and leaves a hunter's mark. I have my pet in for more than half mobs. If I manage to pull in too many mobs, I could lose my mana. I have to use cool downs or traps to get me out of this situation. Remember that if you have your hunter increased, you'll find it difficult to replace most of the gear that is shared.
I feel that the levelling let's concentrate on this particular aspect, is slow, I'm not going to deny that it's designed this way and I'm not a fan of the consistency of it. It's not as smooth as it should be for a Hunter class with high DPS. I'm lacking mana, gold, and damage. I die all the times and can't take down every mob in the same way because of my small mana pool. Once I've killed the mob, I must end and regain health and mana. There are only a handful of feasible abilities that let me survive and deal with cheap WOW TBC Gold damage. It's likely to improve in the future, but I'm starting to doubt my abilities to stay with Wow long enough.