When people decide to take their marketing seriously, the first question is usually "which tool should I use?" or "should I be on Google or Facebook?" It feels practical, but it is backwards. Picking a platform before you know your aim is like booking a flight before deciding where to go. The goal comes first. It tells you which platforms are worth your time (Chapter 2) and which numbers mean something (Chapter 4).
So before you connect a single account, ask a simpler question: what would a good month look like for your business? Make it something you could point at and say "that, more of that."