Stack Exchange takes a different approach to Q&A; different than most of the forum-chatrooms folks are accustomed to. The Freelancing Stack Exchange is designed to create a definitive cannon of knowledge to answer the types of problems you encounter in your day to day work — practical, specific, answerable questions.
There's nothing inherently wrong with your question. It's been asked hundreds of times in every forum on this subject. But in our Q&A format, your question is essentially an opening to a group roundtable discussion. It's a conversation starter. Unfortunately, it's also not particularly "answerable", at least in this style Q&A format.
Take a look at "About Freelancing Stack Exchange" to see how this all works.
I can appreciate the desire to ask these broad getting-started questions early on; I really do. It's just easier to cast a broad net and pick through the selection of answers to see what suits your particular interests later. But that's not what we do.
Why are we here?
This site work work better when you ask about a specific problem you've encountered in your day to day work — describe the situation and explain where you are having difficulties. That way, the users here are not left guessing how they can help you… specifically.
All in all, we simply prefer specific, long-tailed questions over open-ended discussions that simply say "you guys talk and I'll pick out the good stuff later."
Try it. I know that's a pretty big ask — and it's a tough sell. But it's this practical, low-noise approach to Q&A that that has worked so well for us in the past. And it's what drives experts to these sites in the first place.