Defer Parsing of Java Script on vantage Theme

Hi, I’m using The Vantage Theme and I’ve almost finished my site, I did a speed check with GT Metrix and the site speed is average, the main issue it seems is the Defer parsing of java Script which is (F) grade with o and states this: 601.4KiB of JavaScript is parsed during initial page load. Defer parsing JavaScript to reduce blocking of page rendering.

It comes up with the following problems, I was wondering if someone could please help with how to make this better for my website speed without breaking my site. i really have no idea what this all means. Thank You

https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-fullcalendar/includes/js/main.js?ver=1.0.3 (147.9KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/jquery.js?ver=1.11.2 (85.8KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/client/js/prod/lib.view.js?ver=2.5.1 (43.7KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/datepicker.min.js?ver=1.11.4 (29.7KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/ml-slider/assets/sliders/flexslider/jquery.flexslider-min.js?ver=3.3.5 (27.8KiB)
https://www.scrapbookingdelights.com.au/wp-content/themes/vantage/js/jquery.flexslider.min.js?ver=2.1 (27.7KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/events-manager/includes/js/events-manager.js?ver=5.61 (25.8KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-photo-gallery/js/jquery.gview-3.0-dev.js (22.9KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/sortable.min.js?ver=1.11.4 (22.7KiB)
https://www.scrapbookingdelights.com.au/wp-content/themes/vantage/js/jquery.touchSwipe.min.js?ver=1.6.6 (19.1KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/draggable.min.js?ver=1.11.4 (17.0KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/resizable.min.js?ver=1.11.4 (16.3KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/dialog.min.js?ver=1.11.4 (10.1KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/client/js/prod/lib.core.js?ver=2.5.1 (7.7KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/menu.min.js?ver=1.11.4 (7.5KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/autocomplete.min.js?ver=1.11.4 (7.1KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/selectmenu.min.js?ver=1.11.4 (6.8KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-responsive-menu/js/jquery.transit.min.js (6.8KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/woocommerce/assets/js/jquery-blockui/jquery.blockUI.min.js?ver=2.70 (6.2KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/widget.min.js?ver=1.11.4 (6.1KiB)
https://www.scrapbookingdelights.com.au/wp-content/themes/vantage/js/jquery.theme-main.min.js?ver=1.4.2 (6.0KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/position.min.js?ver=1.11.4 (5.6KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1 (5.5KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/button.min.js?ver=1.11.4 (5.0KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-responsive-menu/js/jquery.sidr.js (4.5KiB)
https://www.scrapbookingdelights.com.au/ (3.9KiB of inline JavaScript)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-photo-gallery/js/jquery.easing.1.3.js (3.5KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/core.min.js?ver=1.11.4 (3.3KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-responsive-menu/js/wprmenu.js (3.1KiB)
https://www.scrapbookingdelights.com.au/wp-includes/js/jquery/ui/mouse.min.js?ver=1.11.4 (2.6KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/themes/default/js/prod/client.js?ver=2.5.1 (2.5KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/wp-photo-gallery/js/jquery.timers-1.2.js (2.1KiB)
https://www.scrapbookingdelights.com.au/wp-content/themes/vantage/js/jquery.fitvids.min.js?ver=1.0 (1.4KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/template-tags/ui/js/prod/tag.ui.js?ver=2.5.1 (1.4KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/woocommerce/assets/js/frontend/add-to-cart.min.js?ver=2.4.10 (1.2KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/woocommerce/assets/js/jquery-cookie/jquery.cookie.min.js?ver=1.4.1 (1.2KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/woocommerce/assets/js/frontend/cart-fragments.min.js?ver=2.4.10 (1.2KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/accesspress-social-icons/js/frontend.js?ver=1.4.8 (1.0KiB)
https://www.scrapbookingdelights.com.au/wp-content/plugins/contact-form-plugin/js/cntctfrm.js (543B)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/themes/baseline/js/prod/client.js?ver=2.5.1 (379B)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/content-handlers/image/js/prod/handler.image.js?ver=2.5.1 (368B)
https://www.scrapbookingdelights.com.au/wp-content/plugins/simple-lightbox/template-tags/item/js/prod/tag.item.js?ver=2.5.1 (336B)
https://www.scrapbookingdelights.com.au/wp-content/plugins/woocommerce/assets/js/frontend/woocommerce.min.js?ver=2.4.10 (187B)