WP Slim Gallery allows you to add gallery items in your wordpress website. This plugin is based upon Slimbox2. It is very easy to use with a simple shortcode.Just use this code [slimgallery] to publish your image gallery .
Go to Plugin Demo Site
Follow the instructions below.
Go WP Slim Gallery > Add New.
Give a title and upload image from select your image for WP Slim Gallery.
Create a category and select the category. And publish the post.
Add new image as much as you want to publish.
Use this shortcode in your post or page or widget.
[slimgallery]
To use this shortcode in your template, write
Use this code to get to publish your WP Slim Gallery from a particulat category and gallery image count.
[slimgallery category="Your_Category_Name" count="4"]