It's a double breasted jacket with princess seams. just start digging through the major pattern companies sites, I'd start with Simplicity as you said you are new to sewing, but chances are you will find something much closer to correct at Butterick or Vogue.
more than likely, everything you find will have buttons. this is no big deal, closing it with snaps or hooks & eyes is super easy and less steps than putting in button holes.
look for the double breasted & collar, don't worry about the length, that's the easy part to change. the color blocking on the jacket is also pretty easy, cut it out in a whole piece of each color, lay the secondary color over the first to determine where it should lay and cut the second piece. This also gives the jacket a little more structure as it is adding a layer of fabric.