Instruction on how to tile over a cement floor?

Make sure the cement floor is clean and does not have old lumps from previous mortar ... then just get a bag of tile cement mortar for cement floors , your cement could be either with water mix or a mix that needs a milk like additive instead of water , then get your self a deep square grove trowel to lay down the mortar , put enough mortar at the time so you can lay the tiles comfortably ,once your tiles are all laid down with a 1/4' space between them , don't' walk on them at least for a day , and then mix your color grout that you have to work it between the open spaces , and you do it with a rubber trowel and the clean it up with a large sponge in a pale of water and then little by little clean it up working at it the entire floor area ..., You have to get your self also a tile cuter preferably a large one , you can rent one , you will need it for cutting the far end of you room , the tiles never fit the room exactly , so you have to cut a tile every time you lay down a row that comes to the end , basically two walls out of the four that you have to cut , and you cut them by scouring the top of the tile like cutting glass and then you force braking the tile to size.