For anyone wanting to find out more about Bricscad here is a link to hundreds of short 2 or 3 minute tutorial videos each covering different topics
2d-drafting
3d-modeling
learn-bim
customization
drawing
installation-licensing
interface
images
mechanical
printing-plotting
programming
sheetmetal
learn-shape
There is also a series of books offered freely that cover Bricsacd
BricsCAD for AutoCAD users (348 pages)
Inside BricsCAD V18 (386 pages)
Customizing BricsCAD V18 (590 pages)
There is a complete training course covering the basics which is apparently over 36 hours of content from “Ron Myers - Summit Learning & Technology” which looks to be free as well, though you do have to register.
And quite a few blogs are now covering Bricscad
https://blog.bricsys.com/
https://blog.bricsys.com/category/topics/heidis-blog/
https://www.cadnauseam.com/2018/07/31/a-b-tip-1-clean-slate/
http://www.cadalyst.com/cad/bricsys-we’re-not-holding-back-dwg-part-1-37431
For anyone wanting to try out the program here are links to download a 30-day trial
https://www.bricsys.com/en-intl/bricscad/
https://www.bricsys.com/en-intl/bim/
https://www.bricsys.com/en-intl/sheetmetal/
Bricscad also has a free program called Shape which gives you the chance to build models using the same tools as are found in the full program. It's a really good way to try out all the 3D modeling tools. Without the 30 day limit The file format is DWG just the same as all the other flavours of Bricscad so if you are doing an initial sketch or developing a complete drawing package in Bricscad, turning your model into a BIM model or using the sheetmetal upgrade, it always remains the same DWG file, with the same commands
https://www.bricsys.com/en-intl/shape/
And if you come across a problem with the program or even have ideas to improve it then there is always support, and any questions here are sent directly to the people developing the program.