Tile Based "click and go" Games

Hey i want to make a tile based movement system where you click and your charicture moves to the desired space. I dont realy know alot about tile based games (ive downloaded source files and played around but i dont understand most of it) Could anyone point me in the right direction? And could anyone who has done this before give me some personal tips you think would be helpful?
Oh i almost forgot, i would like it so that the charictures coordinates can be saved into a variable (like make the tiles a grid and have the computer print which space he is in)
Also what exactly does isometric mean in this case? Ive heard that word thrown around when talking about tile based games but never thought to look it up :stuck_out_tongue:
Thanks =]