I had the same concerns with my first batch which I just brewed recently. After 24 hours I had lots of bubbles going on in the airlock. Be patient, that's what everyone told me, if it's good advice. Good luck!
I just made my first batch of homebrew. I followed the instructions and added the yeast as directed. It's been about three hours and I have not seen any bubbling in the airlock. Is this normal? Or is it possible that the yeast is bad or I have killed the east?