The better way to do this is using javascript/jquery.
Use either javascript webstorage api or jquery ajax $.post.
Webstorage api will be good for this.
Here how you can do it.
$('body').on('click', '.button.small', function(){
var index = $(this).parents('table').index('table');
var cur_workshop = $(this).parents('.innercontent').find('h3').eq(index).text();
localStorage.setItem('workshop', cur_workshop);
});
Place above script on http://yft.ac/upcoming-workshops/ this page template.
Then call the below script on http://yft.ac/contact-us/ this page template, to get the current workshop name.
localStorage.getItem('workshop');