This site is helpful: http://crunchify.com/genesis-framework-how-to-enqueue-scripts-and-css-into-child-theme/ Make site faster by loading query from google’s CDN. Also how to add scripts to genesis.
This is how to add in php <?php $a=10; $b=20; $c=$a+$b; echo “Sum: “,$c; ?>
If the script does not contain document.write then, it is ok to move it to the bottom.
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