How do I find a Form_ID for hook_form_FORM_ID_alter? I want to alter the form for a content type I created for videos.  The type is called Videos.  How would I use hook_form_alter to alter the form to create the content?
The form ID is used as the id attribute on the form when it renders.

For content types the pattern is also predictable:  node-[TYPE_NAME]-form.  So in your case you're looking for:  hook_form_node_videos_form_alter().

Another way to handle it is to use the main hook_form_alter() and check the $form_id parameter when you load the form you'd like to target.