team setup and deploying for a laravel production evironment

I am just starting own as a developer. I am currently working with laravel and soon Nodejs. I have a very small budget so free and open source are my best friends. i have two questions.

1. how do i setup my team to work with git so that every can be working on something related to the same project without having much conflict with access management?

2. how do i setup my production environment, in term of deployment and roll back with minimum or no downtime? currently i am using filezilla but there has to be a better way.

via Chebli Mohamed