when Steve says it's very important to seal the grout, that's an understatement. You'll never be happy with your counter if you don't do the grout right. I have had excellent results sealing with the Tile Lab brand from Home Depot.
The best guide I have ever seen on tiling on Formica is an article in Jan `98 issue of Popular Mechanics magazine. The illustrations are the best and it gives alternate ways of facing the counter with oak or Corian as opposed to bullnose. You could probably find this issue in your public library and copy it. Worth the effort.
Keep in mind that your current counter must be basically sound without loose formica or water swelled joints. Steve recommends thinset mortar and I have heard this from every quarter as the best adhesive/bed for the tile. Luck, Kizmet