Along the left side are bars with different functions, like

•  Announcements 
• Collections:  Collections are  a "Pinterest"-style way of collecting pictures, documents, etc. into themes.  This is one feature that definitely works best when you are a registered Hub user, and preferably a member of this group.
• Forum: This is a typical discussion forum.
• Projects:  Projects are places to collaboratively share documents that multiple people are working on, like an online collaborative space. Google Docs can be integrated here. 
• Usage: Here you can see stats on page views, downloads, etc.
• Wish list:  This is where members can ask the group for resources or help, and individuals can take ownership of certain wishes to avoid duplicative effort. 
• Citations:  This is one way of collecting basic bibliographic information on resources of use to the group…  "Where would I look for the best trematode key? Oh, here we go… "

I've started a few discussion posts, a wish, a few collections, and a project, just to give you a sense of what goes where and what the different functions might be used for. 

There is a lot more functionality available, but I turned some things off to make it simpler. (Could have a blog, calendar, etc.)

Adding ASP labeling to the site (pending some approval by ASP powers-that-be) would be easy, and a nice way to boost interest, participation, etc. Right now nearly everything is publicly searchable and viewable – though this can be changed (restricted to group members for instance. Sometimes people like that feature to disallow people from messing things up, or to keep students away from answer keys found in teaching resources).