Additionally, I would like to WOW TBC Gold recommend you this guide for leveling hunters even though it's designed for higher levels than what you're playing right now. If you have the time to read it and you might be able to learn some valuable pieces of info about the class concepts and maybe you can modify it for your own level. If you do not go through the beginning, you'll at least be able to see how it works at higher levels.
It's not too difficult, but patience is the key. Unless playing specific classes/builds, you can only pull one mob at time precisely from the range and in a secure spot that you will not hurt anyone else. Also, you must make sure you are using all tools available to your class (or by using things like first aid) to have 100% HP/Mana, if applicable, before pulling every single mob, in the event that you pull another one , and it takes your life. Even though killing a mob could take about a minute it is necessary to auto attack and mostly avoid afk because there is no buy Burning Crusade Classic Gold other option available which is what some enjoy. This game is very slow.