How to find the post ID
Sometimes you need to find post id. But how can you do that? Go to your admin page and go to your posts (also custom posts/ pages) page, where you can find all your posts/pages listed. Enter the desired post/page and inspect the url of that post/page, you will find something like this: http://yoursite/wp-admin/post.php?post=448&action=edit. See the number 448 – that it the post ID. Your number may differ.