Question about knife setup

Hi there
I'm new to Chef, for learning purposes I want to install mysql on my node using knife.
What I'm doing:

  1. Install Chef Workstation on my machine
  2. Launch knife configure
  3. Launch knife supermarket install mysql
  4. Launch knife bootstrap ip_of_my_node

and here I stuck. What should I do next? Shall I create a new chef repo and call mysql cookbook from this repo?
What is chef organisation and how to register it?
Is my machine a Chef Server in this case or should I setup it separately?
I tried to google it, checked chef docs, youtube videos but I can't find a proper tutorial (

Thanks in advance