At school I have used the inflation tool but I cannot find it on my zBrush. Do I need to download it or load it somehow?
the inflate Brush is in the brush menu
tool.deformations.inflate is also an option.
If those aren’t what you’re looking for you’ll need to be more specific.
You can also load more brushes through the lightbox menu. Zbrush can only load a limited number of brushes, even though there are tons more available. If it’s not loaded at startup you can load them through lightbox.