Migration from VM 1.1.8 with Joomla 1.5.26 to VM 2.024 Joomla 2.5

[Joseph111]

I have to migrate a site from Joomla 1.5.26 & Virtuemart 1.1.8  To Joomla 2.5 with Virtuemart 2.024. 
I made a backup with Akeeba and install my web site into local directory
What should I do at this point ?

could you tell me a good tutorial

[jenkinhill]

http://docs.virtuemart.net/tutorials/30-installation-migration-upgrade-vm-2.html
http://forum.virtuemart.net/index.php?topic=102783.0
http://forum.virtuemart.net/index.php?topic=95236.0

and more in this forum section.