How to capture email addresss in HTML Form and email it in PHP ?

On the .php page handling the post ("send_form_application.php" in your case),handle all incoming form fields in the following way:

1) Create variables to store each of your incoming form fields... ...

$name = $_POST["name"]
$primary_org = $_POST["primary_organization"]
$primary_pos = $_POST["primary_position"]

.. ETC...

2) Create an email body string variable to hold all these values however you want to...

3) Then use php's mail functionality to email the info to yourself... More info here-> http://php.net/manual/en/function.mail.php