What do I need for a Wii?

My mom said that she'll buy me present for graduation and I really want a Wii. My question is, what do I need for Wii? You see, when the Wii first came out my mom said it would be a hassle to buy it because apparently some items weren't included with the Wii (Controllers, etc.) I want the Nintendo Wii Black Mario Kart Bundle, it comes with Black Wii System, Wii Remote Plus controller, Wii Nunchuk Controller, Mario Kart, Wii Wheel. What else would i need to buy if I wanted to play games such as Just Dance or Mario, or Kirby?