Transitions/cuts

I'm a student at The Los Angeles Film School I've taken Editing I which is the basic breakdown of editing next year is when the advanced Editing II class start but I was wondering if anyone could tell me how do you get the seamless transition/cut? I provided an example video. Notice how the scenes transition almost seamlessly perfect? I know how to transition but there's always that split blank pause not the seamless transition. I was wondering if someone can teach me how to do it?