Thank you to all the great folks who helped me get through

Hi,
Thank you to all the great folks who helped me get through building this site.

I am not that familiar with the different ways of using code to take the website to the next level.

I'm trying to get all of my products to line up in different product list display pages (like SHOP). I saw on another thread information about a good jQuery "equalheights" - I can get that code but I don't understand where to put it.

aristath posted this:
Have you tried any jQuery?
I 've used a jquery equal heights script to do this...
http://filamentgroup.com/lab/setting_equal_heights_with_jquery/

I just need to understand where I put this code and how to customize any parts that need customization.

Thanks so much
Ennis