questions about wow please help wow players and people who use to play it?

[RandomGuy1]

i quit wow a few months ago but i feel like joining again since i have a job and people will not stop talking about it at my school and cataclycm came out so i think i might buy it during my summer break since i dont do anything but stay up till 2 in the morning playing video games so my first question is can i level up to a level 80 in 4 months and my second question is what can i get if someone recruits me and my last question is which class should i choose if i like magic but i want to be able to take care of myself and not rely on a party to help me