text: i am a citizen of nigeria,how do i get admission online to  usa universities to study microbiology?   here's what you need to do:  1. write toefl 2. if applying for grad courses, then you need to take gre, adn must have 16 years of education (12 years of school+4 year college) 3. based on your scores, select 3-4 universities. 4. send scores to university.  note the requirements may vary by univeristy.