This plugin allows you to add content slider in your post, page or even in your theme sidebar it works like charm without much knowledge in programming, using WordPress shortcode it works smoothly. NV Slider use WordPress’s thumbnail support, so you have the power to crop or edit image size to suit your site need and if that seems hard for you not a problem this plugin also has a timthumb.php built-in so resizing and croping image is not your job
