I know this might sound silly to you but since I am new to ecommerce it's not so silly to me, so here it goes.

Once I finish larning how to use zen cart is there a one button erase all to start with a clean template or do I need to delete everything one by one.

Just one more question paypal say's to start using zen cart all I need to do is turn it on. What exactly do they mean "turn it on"