Because you turn by dragging with the mouse, you’ll probably find it easiest to use the W, A, S, and D keys with your left hand (assuming you use your right hand for your mouse).
Ker model obračate z vlečenjem miške, je najpreprostejše, da tipke W, A, S in D pritiskate z levo roko (predpostavljam, da miško premikate z desno roko).