Here is a very simple image gallery for your Joomla website. With this jQuery LightBox module, you can display images very easily. First, install the module to your Joomla site, select the folder where you have uploaded the images and publish the module. It is very simple.
The module has many features like auto thumbnail creation with image crop, custom color feature for image borders, option for jQuery library load (disable jQuery library if other extensions are already loading it).
I think the module does not require any other explanation; download and use it! If you may find any bug, just let us know and we will fix it.