Grasshopper for Mac

I’m a noob, been following a fair few tutorials no problem. But when I hover the cursor over a component it says how many times the component ran, but it doesn’t display a preview of the data (like I see in the tuts). Is there a setting I’m missing?

Hi - you need to select a component in order for it to get highlighted in the Rhino viewport, not merely hover over one. If you are not seeing any preview at all, it is possible that you have enabled the Only draw preview geometry for selected objects setting.