How do I sync my iphone 4s calendar with my macbook calendar?

Hey nancygrannis,

To sync your iPhone's calendar with your MacBook, you'll want to follow the instructions in this article:

iOS: How to transfer or sync content to your computer

http://support.apple.com/kb/HT1296

There is also a section that goes into further detail regarding calendar syncing which you can find towards the bottom.

Cheers,

Delgadoh