I came to the unfortunate realization that the Wii is now considered old. Broke my heart but here are some sites to keep the thing going and usable.
Discussion on how big of an SD Card you can put in the Wii
WiiBrew is a page for hacking your Wii and putting “homebrew” applications on it. It is surprisingly easier than you might think.
CodeMii Home of the Homebrew Browser and Wii tutorials