Amherst’s College Guide for Premed Students is a great resource. Click the links in the upper left - Part I and Part II: https://www.amherst.edu/campuslife/careers/act/gradstudy/health/guide
And familiarize yourself with the admissions data from AAMC: https://www.aamc.org/data/facts/applicantmatriculant/157998/mcat-gpa-grid-by-selected-race-ethnicity.html
Lastly, there should be a club for premeds at your school. Sign up and find out what they have to offer.