I saw this earlier today on FamilySearch -5 Questions to Ask Yourself Before Starting Genealogy Research: https://media.familysearch.org/5-questions-to-ask-yourself-before-starting-genealogy-research/.
Before beginning a genealogy or family tree project, there are a few questions you should ask yourself. For example, are you ready to face the truth that could be hiding in your family history? Everyone has a story to tell, your ancestors included. But if you’re one of the millions of Americans who want to know those stories, you’ll need to connect with your inner genealogist. When my brother decided to wade through centuries of the past to dig up our family history, he didn’t realize the rabbit hole he was jumping into.
I would start with #3 on the list which I would place #1 on my list. If you aren’t prepared for surprises, you will find a surprise at some point.