The sweater is knitted top down.
The neck is knitted in a twisted knit ribbing (KB1, P1), laid double and knitted together.
The neck is shaped with German Short Rows.
There are different increases on the front and the back. Front increases continues all the way down the body.
If it helps, there are videos on YouTube to explain the increase and pattern. It is in danish, though. The visuals might help. Search for Heidi Macdams :)