memahami hook dan contoh plugin

http://dapur-uang.com/forum/viewtopic.php?t=108 = hook
https://pippinsplugins.com/simple-recent-posts-widget/
http://themefuse.com/how-to-create-a-recent-posts-wordpress-plugin/
https://premium.wpmudev.org/blog/how-to-make-a-sidebar-widget-to-display-recent-custom-posts-by-jared-williams/