I can recommend 4 trainers that would suit your purpose. They are;

Hobbyzone Champ
Hobbyzone Firebird Stratos
Hobbyzone Super Cub
Ares Gamma 370

These are all highwing trainers that have gotten countless new pilots sucessfully flying. Another good one is the Parkzone Apprentice, but that plane is more suited to training with a club instructor via the "buddy box" technique. The others I mentioned can be successfully flown pretty much without formal instruction. Of all of these, the Super Cub is probably the most difficult to fly, but still a great first plane.