Depth of Market: How to use and improve?

 
Hi guys and girls.

I want to get better at using the depth if market on MT5.

How do I know if there is more supply or demand  also how do I get better at reading it?

When placing stop orders is the any guides as to how close to market to place them and is that dependent on buy or sell pressure?

I like to day trade and scalp at the moment and I an very new to trading so all these tips will help me improve.

Thanks.