Yes. If it is a ceramic or porcelain tile you only need to seal the grout. If you have a natural stone or quarry you need to seal the tile and the grout. Generally when you install natural stone, you seal the tile before you grout. Otherwise the colorant in the grout will seep into the tile. If the floor is existing you would seal it all at once. Don't forget to use a stripper to remove any old sealer. Make sure the stripper is acceptable for the type of flooring you are sealing. Stone can be very delicate and damage easily. Vinegar can etch marble, granite, and travertine. One last note, you get what you pay for with sealer. Invest in a good sealer and you will get much better, much longer results.
Tile floors do not require a floor polisher. You must sweep and mop them regularly but there is no need to polish them.
It depends on the type of tile you have. If the tile is unglazed and porous (as mostly all travertine is) then you will need to seal the tile before you grout it so that the grout does not soak into the tile and cause it to become dull. Follow the manufacturers recommendation for the tile that you have.
Hardwood floors are generally more expensive than tile floors because they are harder to maintain. However, higher quality tile floors can cost more than hardwood floors.
It depends on the type of tile you have. If the tile is unglazed and porous (as mostly all travertine is) then you will need to seal the tile before you grout it so that the grout does not soak into the tile and cause it to become dull. Follow the manufacturers recommendation for the tile that you have.
First you need to identify what kind of tile you have. Ex. ceramic slate stone granite marble For each of the types there is a different way to get the shine your looking for. First clean the tile. Don't use acids or strippers because they can fade or change the color of the grout. Use vinegar and water. 1 part vinegar for 4 parts water. This alone may give the floor a nice shine. I use it when I do a final clean of floors I install. Next go to Lowe's Home Depot and get a tile seal. You will need to know what type of tile you have to determine what kind of seal you need. This seal will protect and give the floor a shine. It comes in many different varieties Main categories to look for are: original seal, semi-gloss seal, high-gloss seal. Now depending on the tile and the type of seal you got. You will need to seal the floor. Apply as many coats of seal as you want until you get the shine that you are looking for. Keep in mind to allow the floor to dry 2 hrs or whatever is recommend in between coats. To apply the seal is simple. Just spray it on and wipe it up with a sponge or cloth not colored be sure its white and sponge is some neutral color so it doesn't bleed onto tile. Be careful not to allow the seal to form puddles as they will leave white spots. Be sure to talk to someone in flooring dept before leaving to make sure you have everything you need.
You sweep the floors
If what you mean by carpet sweeper, is a regular vacuum, then they can only be used on tile floors if they have a selection that is special for bare floors.
Depends on square feet and type of tile
you mop it
To seal floors
No, it is not recommended.
Seldom any need to seal any tile, certainly not Vitrified, what you will still want to seal is the grout..