Suppose you have some information you want to direct first time users to, such as a rules page, or a list of certain posts, etc. You would like to do that the first time they login as a new user. You can do that with the magic of the wpmem_login_filter.
This first example is basic and will redirect a user to a page you define (where indicated in the code snippet comments).
[snippet slug=redirect-a-user-on-first-login lang=php]
The following example shows how to direct the user to the change password page if it is the first time they have logged in. (This assumes that you have a [wpmem_profile] page and that you have set the location of that page in the plugin’s settings for User Profile Page.)
[snippet slug=force-password-update-on-first-login lang=php]