Just add the block and choose which buttons you would like to have displayed. For Facebook you can also select a button caption (like, recommend). If you want to link your own page with the 'i' button, you can choose the URL from the settings.

To add the buttons using the helper function, do the following in your template:

<?php
if ( Package::getByHandle('social_share_privacy') ) {
	$sh = Loader::helper('social_share_privacy','social_share_privacy'); 
	$sh->renderSocialButtons();
}
?>

This is how it's defined:

function renderSocialButtons($uri="",$showFacebook=true,$showTwitter=true,$showGPlus=true,$fbAction="like",$infoURL="")

The arguments are:

$uri string - The URI to be bookmarked. If empty it defaults to the canonical link if present. Otherwise document.location.href is used.
$showFacebook boolean - If true Facecook button is shown
$showTwitter boolean - If true Twitter button is shown
$showGPlus boolean - If true Google+ button is shown
$fbAction string - The verb to be used for the Facebook button. Valid values are "like" and "recommend"
$infoURL string - URL that should be displayed when the info button is pressed

You can also find the addon at github: https://github.com/patrickheck/addon_socialshareprivacy