Ask HN: How to Start Consulting?

I am a developer at a large software company. I've been in this space for about 13 years now at the same company. Right now I am seeking a different challenge and looking to leave the company. But I'd like to do some consulting while I figure out my next move. I often see advice on here regarding leaving your job and doing consulting and it makes it seem so easy. But I honestly want to know where to start if I want to get in consulting. Do I post my resume' on some site? Do I cold email people on linkedin? Public post asking for contracts? Or is it a case of reaching out to your network? .... For the record, I don't have a network that includes many consultants, if any at all.

Where do you start to break into consulting?