I've just started watching the tutorials and ran into this problem too. Thank you for the explanation of how to zoom. In key commands in Logic it tells you to hold down ctrl, opt, cmd, and an arrow key, instead of the correct ctrl, opt and arrow key. Anyone know why this is? Sorry if this is a true ignoramus question! I'm new to Macs too. Watching just an hour of these tutorials has already transformed Logic for me. Brilliant. Cheers.