so basically you want the essential starter kit for the wii? every thing you basically need is already in the box like the console, a wiimote/safty strap, AC adapter, sensor bar, nunchuck, and regular alkaline batteries.
it even comes with wii sports so you can play right away
only extras you need to buy are extra remotes, VC controllers or game cube controllers, a wifi adapter (if you dont have a wireless router), a memory card for more storage, more games (because youll get sick of playing JUST wii sports after a while) and of course mindless acessories such as a cooling fan, wireless sensor bar, wii skins ect.....
check out a retailer near where you live and do a little research....its kinda just common sense if youve owned prior systems in the past