+1 on bolting it to either the floor or wall, best yet, do both
another +1 to putting a peice of plywood under it,
the bottom of most safes are not painted/coated as pretty as they other 5 sides,
putting a piece of plywood, or something similar, will help protect the floor or carpet under it, from any grit, paint, or whatever may have adhered to the underside during packaging and shipping,
as far as moving, I unloaded my liberty 35 (880lbs) from my truck myself, simply tipping and sliding it to the ground, go slow and use leverage,
and used a heavy dolly and a friend to move it in the house,
did the same when i moved to a new house, 2 of us and a dolly walked the empty safe right out,
they look big heavy and intimidating on purpose,
but a lever (or in this case a dolly,) will move the world,