Hi
Welcome to the madhouse, where you will get a variety of responses to your questions - and some of them might even be right!
Where to start? A good starting point is to mark out on the inside of the hull where all the bits and pieces will go, like rudder mount, motor mount, servo tray, battery, etc whilst remembering you will need to add ballast later on.
After that its best to cut the hull for the prop shaft and rudder, the drawing should show you where to make the holes.
As for fitting the deck, you may need to glue strips of wood around the inside of the hull at a level such that when the deck sits on them it is in the right place. It would also be a good idea to make and fit cross bearers at a couple of places, but not where you want access into the hull!
Give the inside of the hull moulding a really good wash with hot soapy water before you start, this should remove any traces of moulding products that would weaken any glue you use.
Glues - twin pack epoxy to attach to the hull, aliphatic resin glue for wood-wood fixing.
Good luck
Ian