What is a linear workflow and how is it done in Fusion?

I'm a newbie and I hear a lot of people talking about linear workflows but i'm not sure what it is, why it is important and how it is done in Fusion.
I think it is something to do with colour spaces and gamma curves?
Could someone explain to me what it is and how to do it, or direct me to a good source? I've came across the term linear and gamma a few times in books etc. but I haven't quite understood it yet.
I think it is something to do with colour spaces and gamma curves?
Could someone explain to me what it is and how to do it, or direct me to a good source? I've came across the term linear and gamma a few times in books etc. but I haven't quite understood it yet.