On to the wings for now...
Each separate wing rib has to be assembled before you can start assembling the wing. In other words... you have to assemble the individual parts before you can assemble those parts into a structure!
Each wing rib (for the upper and lower wings) is made up of several parts: the rib itself, the short vertical stiffener pieces on each side of the rib, and the cap strips that get attached longitudinally to the top and bottom edge of each rib. Multiply all of those parts for ONE rib, and multiply the ribs by how many are needed to build the upper and lower wings, and you come up with a long, tedious process.
First step is to glue the short vertical stiffeners onto both sides of each rib, and then trim each stiffener flush with the top and bottom of the rib:
Then, each rib gets a cap strip on both the top and bottom edges, like this:
I'll be at this for a while...