Yes!

For people like the OP seeking high quality resources with an emphasis on the networking/sales/marketing skills required to succeed as a tech/dev/software consultant, I'd recommend starting with "Getting Starting in Consulting" by Weiss.

Then if you'd like more after finishing that, others to check out are:

* This PDF on sales processes https://www.entrepidpartners.com/how-to-sell-guide

* "An Insider's Guide to Building a Successful Consulting Practice"

* "The Software Engineer's Guide to Freelance Consulting"

But start with the Weiss book first because it gives a good and tactical overview.