The manual is OK and the tutorials are a little better but nothing beats having someone else show you what to do.
If you can get hold of someone who already knows Archicad and get some pointers.
Even if it means paying someone for training it is well worth it.
Your trimming wall problem for example.
An Archicad user could show you at least 4 different ways in about 2 minutes rather than 2 hours.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11