How to work with Omeka

Hi
I have been using open source technology other than Omeka.
How can i get started with this.
Can anyone please let me know the help page or reply to help me get started with Omeka.
Thanks

Have you tried looking at the documentation? It's linked at the top and bottom of every page here on omeka.org.

In particular, the first two sections, "Getting Started" and "Working with Omeka Admin" sound like what you're looking for.