I usually start people off by directing them to the products pages off of http://support.sas.com, the same place you used to get to this communities page. You can navigate to the products section and there is a link to the DI Studio page which has doc, pointer information, training examples, etc. Here is the direct link: http://support.sas.com/software/products/etls/index.html . There are training classes that you can attend, and an online user guide that you can browse through.
In addition, there are many papers available from SAS User Forums that can be helpful that discuss DI Studio and contain lots of information around best practices, tips and tricks, etc. You can access the papers from the same website, http://support.sas.com, click on Knowledge Base, Papers, and then select Conference Proceedings on the top RHS. Here is the direct link: http://support.sas.com/events/sasglobalforum/previous/online.html
Hope this helps!
