Each bill/resolution number is linked to the official history of the legislation, as produced by the State Legislature and posted on its web site.  The history includes all action taken on the bill/resolution, sponsors, dates of action, amendments, and roll-call votes.

At the top left of the bill/resolution history is a link to the actual language of the legislation, which also includes an analysis by the Legislative Reference Bureau.  Some pieces of legislation may have an "LC memo" noted at the top right.  This is analysis provided by the state's Legislative Council.

Other helpful links:

Wisconsin Legislation: Infobases (note that from the page you are linking to, you can research proposed legislation by author—a very helpful resource.)

"Who Represents Me?" (quick online way to find out who your state and federal level legislators are)

Assembly Bills

Senate Bills