Help me! Show me my 3D model on a 2D screen

Hi @Geekln, and welcome!

Check out this thread.

For rotation, you can do the following -

this.entity.rotateLocal(x, y, z); //Without physics
//or
this.entity.rigidbody.applyTorque(x, y, z); //With physics

To learn how to use mouse input in PlayCanvas, check out this tutorial.

Hope this helps!