Change button links on store page

Hello! I’d like to change the “add to cart” buttons on the store page to “learn more” buttons that link to each product’s main page instead of adding the item to the cart. I know what to put in my functions.php file to change the button’s label, but I’m hook ignorant about how to change where the button points.

Can anyone give me the code? Thank you thank you thank you 🙂

http://wordpress.org/extend/plugins/woocommerce/