Recent attention to Oa + Wf

A new project in the lab involves OA and workflow. Although I know something about it, I have never done it. I have to spend some time learning about it. Collect several excellent WF sites in China and learn about them first. I cannot figure out how the workflow of the B/S structure is automatically completed ???

Site collection:
Enterprise OA (http://www.oa789.com/index.htm)
Workflow Forum (http://www.wf800.com /)
Workflow Network (http://www.simflow.net/index.htm)
ProgramMember's nest-workflow topic (http://www.delfan.com/workflow/index.html)