Hi! I just want to ask if I will be connecting my phone in my PC for 8 hours, will it damage my battery?

No i use the USB port to charge the BB all the time but some ports cannot charge the phone. Make sure the charge indicator is on the battery symbol.

Thanks for the info! I will be working in the office the whole day, is it ok to leave my phone plugged even if the battery is full?

Yes , I do the same to avoid a dead battery.

also can get a charge only cable which on many newer PCs will charge it faster