The 4-Star .40 is an excellent second plane. So is the Goldberg Tiger 2. They are both easy to build and easy to fly. Almost all kits come with parts like ribs and formers cut to shape. Just sand the edges a little to clean up the roughness and glue them in. Sometimes large balsa pieces are cut to a rough shape and you have to do more sanding. Stick pieces like stringers and spars will need to be cut to appropriate length. Nothing hard about it, just take your time and make sure you build it straight.