Just a few tips. Use the largest tile you can. It makes the room look larger. Dont get too cute with how you want to lay the tile. If you just line them up the way I did, it makes it very easy to put furniture and rugs to where everything looks neat and tidy. Dark grout is a good idea, too. I used light grout, and it turned dark pretty quickly.
I went to a local tile store and got pretty expensive imported Italian tile, but it only added less than $1000 to the entire house than using the cheaper tiles, so get what you want. You hopefully wont be doing it again for a long time, and to just do the kitchen...especially if you use the larger tiles (18"), it wont take that much. I also got tiles with a natural shine on them, they seem much easier to keep clean.
Do it!!