How To Draw Torus(Mesh)?

You could use a modelling package such as blender (www.blender.org) to make a torus and then directx natively supports a .x format, you could load the .x file and render that.

I hope this helps.
Take care.

To move camera some backward, use

device.Transform.View = Matrix.LookAtLH(New Vector3(0.0F, 2.5F, 8.0F), New Vector3, New Vector3(0, 1, 0))

in your OnDeviceReset event handler.

notes:
device - your Direct3D device
8.0f - how far camera will be from coordinates center