Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
Weblogic platform has different sections within it for example - Weblogic Integration, Weblogic Portal, Weblogic Server, Weblogic workshop etc.
So, when you say you want to dive into weblogic, do select one of these sections (for eg - Weblogic Portal) first and then just refer to corresponding online oracle weblogic documentation.