There is such an idea (for now it's just an idea) to make a study group dedicated to BizTalk. Why this particular technology? Here are some reasons:
Competences in this technology are few who have, so knowledge (at least superficial) is a trump card in the summary
There is a chance to get acquainted with the concept of EDI
You can understand the protocols and standards of B2B
You can explore the different sides of the datnet, in particular the Workflow Foundation, WCF, etc.
At the same time you can grab a bit of domain specificity, for example from finance.
I know that technology is not the most popular, but still, orders in this area are also (albeit rarely). I suggest this format - we read some kind of literature (say, Foundations of BizTalk ), watch webcasts and labs , then call Skype on weekends, share experiences, discuss who achieved what, share self-written adapters, and so on.
If you are interested, check below. Or write in a personal.