I don't have a you tube link for you. Although I bet Mr. Google does!
However, it really is no different than piecing a regular bunch of square blocks.
The difference being is that you are turning them a quarter turn.
The easiest way is to lay them out on your design wall, bed, floor etc.
You'll be sewing all straight rows, except each row gets longer.
Then you do your cross rows to join those first rows all together.
Square up and border just the same as normal.