All it takes for you to be successful is following the guide to the T.

Obtain the gear you get during your quest since that is all you need to be successful. World of Warcraft gameplay is much more enjoyable when you earn your gear by killing creatures.

Make sure you focus on getting a good horde levelling guide.

Truth be told questing is really boring at times but you can avoid it. It might make levelling take a little longer but if you get bored fast then it might help to listen to some music while questing and then take it up a notch by raiding. Why kill the fun you have with the game by questing the whole time when you can join a guild or something. Do not get too obsessed with the game as this can mess with your personal life.