I'm not that skilled in editing the wiki either, I just look at other edit pages and try things as I go along, the "Show preview" button usually comes in handy. But I guess some directions on adding new stuff is overdue a bit as it's not so intuitive, and I never realized this is one of the things keeping people from adding stuff.
If this is useful I'll put it in the wiki as well.
To add a new page you can just make up a new url, like this:
http://wiki.linuxmce.org/index.php/Name of the page you want to add (the wiki will replace spaces with underscores automaticly) and edit it.
For hardware I think the best convention is: "Manufacturer_Model-Type-Whatever", in your case that would be:
http://wiki.linuxmce.org/index.php/MSI_MS-7329. To categorize the page so that it's easy to find, you can put this at the top of the page:
[[Category: Hardware]]
[[Category: Mainboards]]
And below that you can put anything you feel is relevant. Here are a few things I figured out so far:
==This is how you can do a section header==
===Which can be nested by adding more equal signs===
*This is an unordered (bullit) list.
**These can also be nested
#This is an ordered (numbered) list
##I think these can be nested as well
:This will be indented
::Indented more
Lines starting with a space will be "preformatted", and placed in one of those typical dotted boxes.
''
Italic text''
'''
bold text'''
'''''
italic and bold'''''
Urls are automaticly recognized, but there are more possibilities. For example:
http://some.domain/page.html shows the URL 'as is'
[http://some.domain/page.html] shows up as an increasing number
[http://some.domain/page.html alternative text] shows up as "alternative text"
[[other wiki page]] link to other_wiki_page, shows as "other wiki page"
[[other wiki page|alternative text]] link to other_wiki_page, shows as "alternative text"
<nowiki>this will stop the wiki from applying formatting, useful if you don't want url's turned into links for instance</nowiki>
Alternatively you can also use the standard HTML tags. I hope I got all that right and that it's enough to get you started. The headings will be put into a table of contents at the top, but only when the page gets long enough I think.