A good beginner/starter kit? Let's see….

There are plenty of good WW2 aircrafts. Here are a few:

P-51 Mustang

Spitfire

Hurricane

P-47 Thunderbolt

P-40 Warhawk

Bf-109

Wildcat

Hellcat

A6AM Zero

Airfix are great kits for a beginner. Tamiya even better. They're practically shake and bake right out of the box.