Yes Thanky the author Dave McLachlan has a Twitter account as well but the last tweet was back in August 2016. I don't no what happened to him. Maybe he just lost enthusiasm for giving all his stuff away for free. The free video course was of good value to me when I was looking for a replacement to my Metastock software. Some of the Amibroker user interface has changed in the mean time, but the videos really do give you a good intro to the software. The Handy free book is more detailed and precise and is a start to finish tutorial on how to install and use Amibroker. Yes the ability to collaborate re systems development and also be talking the same language will be a huge plus.
Start thinking about system ideas that we can test against ASX data. I've got a lot of ideas but just haven't had the enthusiasm to test them as yet. Talk again later - Wilf.