  Step 1  Remove Fixtures  Empty the room and remove any
fixtures that may impede the process of removing the tile. Turn
off water supply before removing a sink or toilet. If removing a
toilet, drain reservoir, remove bolt and rock the fixture to
break wax seal.  Step 2  Locate or Create a Starting Point
Step 3  Remove Tile  From the starting point, continue to pry up
tile. Deposit tiles in a trashcan or large bucket as they are
removed to minimize clutter. Remember that tile can be heavy and
an overfilled waste receptacle will be difficult to haul away. 
Step 4  Access Underlayment  In some cases, tiling may have been
attached directly to a concrete floor or sub-floor, but a
plywood or mortarboard underlayment is common. An inappropriate
or damaged underlayment should be removed, but some may be left
in place for re-use. Access the underlayment and remove to
expose the sub-floor, if necessary.  Step 5  Clear Debris  Use a
broom or shop vac to clear all debris from the floor.  Step 6
Remove Exposed Nails