If you have a router or a Nintendo Wi-Fi adaptor, you can set up your wireless connection from the internet options. It's really easy. Your Wii will search for wireless networks then ask which one you want to use, you pick one from the list (and enter a keycode if you've secured your wireless network) and boom, there you go.
You can get Wii points by buying them online or buying a Wii Points card from a store and using it with the Wii Shopping Channel. Just input the code on the back of the card and boom, 2000 Wii points.