How long will it take for me to get to level 30 in WoW?

I am wondering how long it will take to get to level 30 in WoW. I am a casual player. My mom lets me play an hour a day (try to get 2 hours of playing in). I am currently level 14, getting a level a day. How long do you think it will take to get to level 30. Then 30-40, 40-50, 50-60, 60-70. Mainly, 14-30. How long do you think it will take. I am a dwarf warrior on echo ellis. Tips? Help? Anything? PLEASE HELP!