how to get signals trading from signal provider (trader)

 

Can anyone please explain me in briefly about how to get signal trading or automatic mirror trading from signal providers listed in MQL5 community.

I used Metatrader 4. I want to know the explanations step by step. Do I need VPS and can I try it in demo account?

What is the minimum equity needed for this signal trading system?

Sorry, I am newbie in this system 

Thank you for anyone who reponses me.