I want to click on pictures and have them enlarge

Light box is a simple plugin that you only need to add one ccs file, one script and simple code in html.

<a href="meerkat1.jpg" data-lightbox="image-1" data-title="text that comes up on click below the pic"><img src="meerkat1.jpg"></a>
<a href="meerkat2.jpg" data-lightbox="image-2" data-title="text that comes up on click below the pic"><img src="meerkat2.jpg"></a>

Go to their site for more options