A. Wallace’s Answer
Glad to hear of your interest in biomedical research. Of course, the first step is to get your undergraduate degree. Now a days, the really hot degrees include molecular biology and genomics. A general degree in biology is probably less useful, but there are multiple subspecialties. During your undergraduate training in college, if you have any interest at all in Computer Sciences it would be good for you to pick up a few courses in codeine, as so much of biology has moved into the "Big Data" science end of things. With these degrees, you could find jobs in research institutions, biotech companies, and pharmacological companies as a technician. These jobs can pay reasonably well.
After college, and especially if you got a job in biotech, you could probably have your company pay for you to take some courses in order to get a master's level degree in some field of research biology that you find yourself particularly interested in. Over the years these jobs can pay actually quite well.
Finally, if you have the interest and the stamina, there are a multitude of phd degree programs that would be open to you once you really know exactly what part of science is exciting to you.
Do what you can to get some summer internships, even as a high-school student. I am now retired but I often had high school students in my laboratory. You might want to Google researchers in institutions or companies that are close to you to work as a summer intern doing biomedical research. Don't be shy, send an introductory email to researches in your geographical area and include whatever you have for a resume and see what might come up.
Regardless, best of luck to you!