Reading Usable Help
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Gordon R. Meyer
An example of simple Wiki-based instructions
The proliferation of wiki technology means that a lot of instructions, even complete sets of documentation, is appearing online and in editable format. If your company is doing this, but bogged down or intimidated with choices about how to style and format the instructions, just diving in anyway might be the best approach. To that end, check out these wiki-based instructions that are simple, mostly usable, and accomplished using an standard MediaWiki techniques. Notice that there's even a automatically-built advanced organizer at the top of the page. While this can surely be improved, the simplicity and ease of creation allows you to get started right away.
See also: Creating Help from a Wiki.