Depending on how you plan to run the game, there are different versions provided within the download link. Is your Wii hacked to run homebrew, do you own a copy of smash in order to run hackless (which is probably the easiest method), or is your PC powerful enough to run the dolphin version? There is an Instructions text document you can read through as well (may even be possible to translate to another language through google if you so desire) which should help to start the install.
