The migration is not quite completed:

• Goto this Page and look for content you would like to migrate to the current wiki. (OpenVPN-stuff for example)
• The articles are there for a reason: We do not want to delete them, but we also cannot put them into the current wiki, because they reflect an old OpenWrt build. Things are done differently (and much more easily) on the current OpenWrt-Installation. For example, we do not use NVRAM any longer and also, a lot of software is available in package form.
• Start a new article and get inspired by the old one. Keep in mind that the current wiki is highly modularized:
  • See template_howto as a guideline. We do not explain everything again and again, but link to it: For example: link to usb.essentials and to usb.storage or to usb.audio and then explain merely the rest.

http://wiki.openwrt.org/doc/start#howtos

• usb.essentials for a basic USB support (DO NOT EXPLAIN THIS AGAIN! Link to it, and your done)
• usb.storage for USB storage support
• installation to install and configure the LuCI WebUI.
• wireless.overview for stuff related to wireless
• Mounting.Filesystems to make the reader mount any filesystem. Leave the choice up to him, or link directly to a certain one.

1. excellent article about the build environment: http://forum.openwrt.org/viewtopic.php?pid=31794#p31794
2. Kamikaze init script layout: http://forum.openwrt.org/viewtopic.php?id=11301