Independent HR Consultant - What are the ways to source the candidates online free of cost?

I worked in a Job Consultancy for a while. Now i want to work as a Independent HR Consultant
I need help like
1. How to get started
2. How to sign contract with Clients
3. What are the ways to source the candidates online free of cost.
4. I am a very hard working person, sincere & honest
5. It will be of much help if someone can help me to work a Independent HR

Dude, If you have no clue, I believe that you need to work for some more time.
Only experience can answer your questions efficiently and effectively.