I've started to compile a web page of useful PixInsight links:
http://www.drakevisual.com/pixinsight-links/There are links to video tutorials, web page tutorials, forum discussions, etc. Some of the links are for material here on the PixInsight site, but many are for material found elsewhere. I started this list for my own purposes as I was learning PixInsight, and hope that it might be useful to others.
Please let me know if there are any more links you'd like added, as I plan to continually update the page. Also, if I've linked something of yours that you would like removed, please let me know.
Enjoy, Sean