Simple Form Processing

I just broke skin with php and I'm learning forms, which I'm not good with at all. These are snippets from post.html: <form method="get" action="process.php" enctype="multipart/form-data"> and <input type="file" name="image1" maxlength="750" allow="images/*"><br> <input type="file" name="image2" maxlength="750" allow="images/*"><br> <input type="file" name="image3" maxlength="750" allow="images/*"><br> but how would I pass the actual image on because when I do something like this: <?php echo "{$_GET[image1]}"; ?> as you could probably guess only the filename prints. So how do I take the image instead of just the filename? Thank you, -- Kyle