Look up basic php syntax, w3 is a good place to start. The function you need is already built into PHP, the mail() function. You have to learn how to pass information from a form using the $_POST variable. This is the basic mail() function.
PHP Code:
<?php
$Name = "Bart"; //senders name
$email = "email@adress.com"; //senders e-mail adress
$recipient = "PersonWhoGetsIt@emailadress.com"; //recipient
$mail_body = "The text for the mail..."; //mail body
$subject = "Subject for reviever"; //subject
$header = "From: ". $Name . " <" . $email . ">\r\n"; //optional headerfields
ini_set('sendmail_from', 'me@domain.com'); //for linux i think
mail($recipient, $subject, $mail_body, $header); //mail command :)
?>
If you want to take the easy way out pm me and i'll just write it up everything with the form quick.