Binging old episodes of This Old House will give you about the same level of understanding that a football fan has of his favorite sport. You won’t necessarily be able to fix things but you’ll know something isn’t right.
That's an excellent analogy. I'd push it further to say that there are YouTube channels (like QB School, to stick to football) that can take you to level 2.
If nothing else, This Old House will teach you how fast you should run away from a house with water damage if you don't own it. Which is, "knock your grandmother down if she's in the way" fast.
