Step 1:

Clean the sub floor well before beginning the project of installing ceramic tiles.

Step 2:

Mix the tile adhesive according to instructions of manufacturer.

Step 3:

Apply the ahesive to the cleaned surface.

Step 4:

Level the adhesive to make it even.

Step 5:

Make ridges for a strong bond using any sharped edge tool, like edge of the trowel.

Step 6:

Place the tile on the surface.

Step 7:

Similarly place other tiles and check their level to ensure they are even and in line with each other with use of tile spacers in between tiles.

Step 8:

Grout the tiles when dry using a matching colored grout.