poorkid,

Since this is your first kit, you're not a very good judge of the plans/instructions quality. The DC Advance is NOT a beginner's plane or kit, and therefore the builder is assumed to know some basic things about R/C planes and their construction. You should possibly put this kit aside until you've completed something more simple.

Cap Strip - A piece of balsa glued to the edge of the ribs, with the grain running lengthwise. It serves to stiffen the ribs.

Inboard Sheeting - I'll assume this is referring to the sheeting on the center of the wing.

Stringers - Balsa or hardwood running lengthwise along the fuselage, sometimes forming a turtledeck of reinforcing the fuselage sheeting.

Bulkheads - Balsa or ply inside the fuselage, placed across it at different spots to keep the fuselage form and strengthen it.

Dr.1