I'm a beginner in Magento, and I'm following the road-map below to upgrade from 1.8 to 1.9 version.
Arriving to 4th step. I didn't know which directories should i copy from /app/design/frontend
Could Any one Help me?
In your 1.8 instance go to System > Config > General > Design > Package > Current Package Name and that is the directory under /app/design/frontend/ that you need to copy over.
To be on the safe side copy over anything that isn't /base or /default or /rwd
Note, if you have modified anything in /base or /default or /rwd you will probably lose these changes when you upgrade to 1.9