Find books on life sciences and microbiology in your library. Visit a science museum. Find out if your school or community has a science club, science fairs or other activities you could get involved in. Try out the experiments on this web site and ask your science teacher if she or he can help you find others.
In high school, you should plan on taking biology, chemistry, physics, computer science and math. English courses are also important because microbiologists spend much of their time writing articles or papers and giving speeches. Foreign languages are helpful for exchanging information with scientists around the world.
You may try to get a job or internship in a research lab of a university or science-related company during the summer to gain hands-on experience. You may wish to talk with microbiologists in companies or universities to learn more about careers in this field.