This page covers a basic guide for getting started with the brushes and provide a quick cheat sheet for commands using World Edit Brushes.
WorldEdit brushes are super useful for creating structures either hollow or filled, hills, fixed building shapes and more. In combination with WorldEdit cut and paste commands and using other WorldEdit commands you can create complex terrains very easily. The video below by MegRae covers the basic brushes very well.
WorldEdit Brush Commands
The full guide is available on https://worldedit.enginehub.org/en/latest/usage/tools/brushes/ which is the official resource for commands, permissions and for installation of WorldEdit.
MINECRAFT WORLD EDIT: ADVANCED TIPS & TRICKS
Building structures in MineCraft using WorldEdit does require a learning curve to be learnt in order to be efficent enough for it to be time worthy of using. WorldEdit can cave you a lot of time building but learning the advanced features of WorldEdit. I’ve found an advanced tutorial of WorldEdit that covers complex commands.