GMAT Strategy

Hi everyone,
I'm an electric engineer who's thinking about getting an european Master in Management (MBAs require work experience and I don't have any). I'm going to graduate next year but I want to have everything ready in advance for school applications.

How do you think I should proceed and take advantage of all this time for a better preparation?

One more thing. I haven't understood the difference betweek the Kaplan Premier book and the two Math and Verbal Kaplan ones. Can anyone help?

Thanks in advance,
Alberto