Hi Kimchoc DW is not that complicated. The most complicated platform being the FFG. But all others pretty much operate with the same procedures.
Remember DW is not a hardcore study sim by which it doesn't simulate down to the button details.
DW is an experience sim. That is to say that DW mimics and simulates the experience of operating various naval platform systems.
An experience sim is always less complicated than a study sim. Both maybe technical but an experience sim gives you plenty shortcuts while a study sim doesn't.
All you need to do to learn DW is to watch the videos given or to look for Sub command tutorial. Good luck to you