people think bipes are easy because they have a lot of lift with two wings. First of all the two wings make for a lot of drag, These planes are hard to dead stick because of this drag. You have to put it into a descent dive to keep speed up. because the lift is split between two wings the wings are shorter then a trainers wings. This shortness leads to the planes ability to roll fast and easily. Traits that are not good for beginners. Low dihedral angles also make the plane less self correcting. Bipes are a better 3rd plane or maybe second if you are a very good student