Hi Im new to zbrush and I find when I’m zooming in and trying to add detail it gets very pixelated and hard to edit, is this normal in zbrush?
You need to scale the model rather than zoom the canvas. On the right shelf the buttons are grouped. At the top are those dealing with the canvas. At the bottom are the ones dealing with the model, which become available when you have a model in Edit mode. Those are the ones you need to use.