1. Get an undergraduate degree in any field with good grades. The best fields are engineering, mathematics, or the sciences.
2. Get a job and work 2-4 years. Save your money, every penny you possibly can.
3. Take the GMAT and get a nice score in the 600 + range.
4. Apply to the MBA program of your choice.
The Official MBA Guide provides a lot of information about the MBA degree and MBA schools and programs. It's a comprehensive free public service with more than 2,000 MBA programs listed worldwide. It allows you to search for programs by location (US, Europe, Far East, etc.), by concentration (finance, marketing, aviation management, health management, accounting, etc.), by type of program (full-time, distance learning, part-time, executive, and accelerated), and by listing your own criteria and preferences to get a list of universities that satisfy your needs. Schools report their accreditation status, tuition cost, number of students, class sizes, program length, and a lot of other data. Schools provide data on entrance requirements, program costs, program characteristics, joint degrees, and much more. You can use the Guide to contact schools of your choice, examine their data, visit their web site, and send them pre applications. You can see lists of top 40 schools ranked by starting salaries of graduates, GMAT scores, and other criteria. It's the best service available at http://officialmbaguide.org.