Ask HN: What is your experience in tech consulting?

I just started my consulting firm moving from a lead tech role at startups, and I wanted to see other's experience in the forum regarding initially starting the firm, networking etc... I started with 2 pro bono clients that in return will write a testimonial. I have got also potential paid clients in negotiation, I am focusing on writing and entering podcasting but I am not sure how. Would also love to hop on some calls if anyone is down anytime.