The front panels of the drawers will have half blind dovetail sockets. The rear will just be through dovetails. The stock was milled to size and cut to fit the drawer aperture. In my country on drawers of this small size 95 deep x 202 wide (3-3/4" x 8") I am able to have just 1/32" clearance on the top of the drawer and slightly less for the sides. We don't get massive swings of humidity so those clearances are fine.
There are a variety of methods of marking from the tail boards onto the pinboards - balancing the tailboards on bench plane while holding the pin board in a vise, trying to mark them whilst balanced on your knee, getting somebody else to do it for you - to name but a few.
My method of marking
The first thing I do is very lightly mark the end grain with the marking gauge (you remembered not to alter the setting didn't you?) Then I clamp the pin board in the bench vise and have the endgrain end just slightly proud of the vice (only a hair). Then I square the board to the bench top with my engineers square.