On the assessment side of collaborative and group learning, the LTSN Project Assessing Group Practice is a wonderful resource. Whilst not focussed on the "MLE" world, it discusses most of the real issues which will be involved in embedding.
If you can read this text, it means you are not experiencing the Plone design at its best.
Plone makes heavy use of CSS, which means it is accessible to any internet browser,
but the design needs a
standards-compliant browser to look like we intended it.
Just so you know ;)