I took Eric Landers "Introduction to Biology" course before transitioning into bioinformatics (https://www.edx.org/learn/biology/massachusetts-institute-of-tech

I took Eric Landers "Introduction to Biology" course before transitioning into bioinformatics (https://www.edx.org/learn/biology/massachusetts-institute-of-technology-introduction-to-biology-the-secret-of-life https://www.edx.org/learn/biology/massachusetts-institute-of...). Can highly recomment this course, although it's a little outdated now.