I particulary really like this guild's website.
I think all the information a member or potential member could want is included, and presented in a really user-friendly format.
http://empirequilters.net/
There's everything to a public Show & Tell to confidential financial information available to members only.
As you said, the levels of computer experience vary greatly within a guild, and you have to make it accessible to everyone.
Here's another really good one:
http://northernstarquilters.com/
I've never had to ask an additional question as it seems whatever I wanted to know was already included.
I really like when that happens. ;-)
And best of luck to you in your new role as webmaster for the guild.