What I require is to make an exact copy of my existing Ubuntu installation along with all data and applications into a new laptop. What are the simple method's for a normal computer user without much complicated steps.
You can use Clonezilla Live:
Two types of Clonezilla are available, Clonezilla live and Clonezilla SE (server edition). Clonezilla live is suitable for single machine backup and restore
The Systemback tool allows you to create restore points, backups, and live images of a running system. Currently, it only works for Ubuntu derivatives based on 14.04, 14.10, and 15.04.
sudo add-apt-repository -y ppa:nemh/systemback sudo apt-get update sudo apt-get install systemback