How to Homeschool Multiple Ages

Q: My kids are ages four-and-a-half years old, two-and-a-half years, and ten-and-a-half months old. I am intimidated to homeschool them for some reason! You've been home-educating for a while now, I would love to glean from your knowledge and experience! Are there any tips or advice that you can offer me as I begin to teach multiple ages?

A: I homeschooled my first three who were about the