I want to change my joomla site into my local language but the problem I have is that there is no pack exist for my local language . how can I make it happen ? thanks for your help ?
While Joomla may not officially support all languages, there may be an extension that can further assist you within the following page:
Translations for Joomla
If you do not see your language there, you may also request another language from Joomla Language Team on their forums as well.
If you need something immediately, you may need to use another language that your customers may be familiar with or may find it through further searching on Google as a 3rd party may have made it somewhere.