Here are some links that I found useful to soft mod my Wii
http://www.wiihacks.com/recommended-faqs-guides-tutorials-only/24630-full-hacking-guide-4-2-system-menus.html
http://bannerbomb.qoid.us/
http://gbatemp.net/f108-wii-hacking
http://www.instructables.com/id/How-to-play-Wii-backups-on-a-usb-stick-with-no-mod/
http://www.filecrop.com/--IOS16-64-v257-prod.wad.html
http://usbloadergx.koureio.net/downloads
http://vettacossx.wordpress.com/wii-sd-hack-warehouse-update/
http://forum.wiibrew.org/
http://www.det1re.de/d/index.php?dir=wads/&sort=date&order=desc