Step 1: Start getting educated on the topic.
Full stop.
Once you've done a sufficient amount of that, you'll start knowing what questions to ask and can grow from there.
Start reading real estate books on the topic you want. Short blog posts and forum posts aren't going to do it, compared with a 300-500 page comprehensive book. Multiple of them.
We're not going to be able to give you enough knowledge, nor will BiggerPockets. We can help enhance, and clarify, but you should start with some A to Z big picture stuff.