There are so many open source image gallery solution for Wordpress. You can see recomendation of image gallery plug-in on this post. Pixelwit blog gave best recommendation.
In this post I’ll give you some tutorial, how to integrated Image Gallery on Wordpress. In this tutorial I’ll use Nextgen Image Gallery plug-in. With this plug-in, you can manage your galleries and albums very well. You can choose any style for you gallery page. The installation is very easy. Just follow the instruction bellow.
First, download the last release of Nextgen Image Gallery here. Then extract it and copy it on your Wordpress plugins directory and active it from Plugins menu on your dashboard.
Second, create new folder gallery on wp-content and make sure you have allow write permission on it.
Third, go to gallery menu on your dashboard. Then create new gallery and upload some image on it.
Fourth, create new album and drag gallery that you want to add to this album.
Fifth, to add it to your gallery page, go to your post/page an enter the tag ‘‘ or ‘[slideshow=ID]‘. See more tags in the FAQ section.
