For videos and instructions on replacing all types of common roof tile or roof slate see here.
How to replace screwed interlocking roof tiles.
Video walkthrough of looking at the tile roof replacing 3 roofing tiles re adhering 5 sliding roofing tiles repairing 4 more roofing tiles.
Replacement of roof tiles that have cracked broken or disappeared is important to prevent roof leaks an ceiling damage once rain and wind appear.
The roof repair is simple enough but requires the type of ladder that few homeowners keep around.
Fixing the problem quickly by yourself is possible provided it s only a few tiles.