Are you asking this type of questions?
What's the role of mediator?
How does mediation work?
What are the advantages of mediation?
What can be mediated?
How to prepare for a successful mediation?
This excellent article from Mediator Select gives you detailed and to point answers. You don't need to google many websites.
Here's what's covered:
What is Alternative Dispute Resolution?
The Role of the a Mediator
The Benefits of Mediation
How Mediation works – What to Expect
What Can be Mediated?
How to Prepare for Mediation