Even in the book, during the first step, you’re told that you will need to practice and trial by error. Personally, we feel that this cube will be more fun for children and adults that enjoy puzzles and don’t mind the complications behind a Rubik’s Cube. You must have patience when it comes to building and practicing. However, once you are finally able to solve it, you’re going to be pretty proud of yourself and the people around you are going to be impressed because it really takes a lot to solve one of these cubes.
If there are no more edges left on the top layer, then they are probably either inserted in the right place but flipped, or inserted in the wrong place. To get an edge out of somewhere it shouldn't be, just insert one of the yellow edges into that slot. This should get the edge out and on the top layer, ready for you to use the above instructions to insert correctly. Rubix Build