Power up 100% or Default 50% 50%. What does it mean?

I am here on steemit endeavoring to discover more data on how the payout takes a shot at steemit.

I have a couple of inquiries?

What is the distinction between control up 100% or default 50/50?

What present is it better on control up or default?

Is there a reference page to visit to improve comprehension of how all regions in steemit functions?

So please would someone be able to plainly disclose to me how the payout functions and whats the most ideal approach to make and set aside your cash before taking a compensation out.

Much thanks to you.