This plugin allows you te redirect to new users to another url besides normal one, by default to help documentation, but you can set your own url

To change url go to inc/languages/yourownlanguage and create file if not exist based on english. Then copy entire content of this file and change this two lines:

$l['redirecting_onreg_url'] = "misc.php?page=action=help";
$l['redirecting_onreg_url_mobile'] = "misc.php?page=action=help";

To your own redirect pages, for mobile you have to use GoMobile, but if not use this use the redirect on first row only

Cheers !!!