How to Increase Memory of Beaglebone Black

Ya I know the previous versions of the Beaglebone Black has only 2GB of eMMC memory out of which the OS takes up 1.5GB. I have done a lot of internet search and read a whole lot of blogs. Finally I got a solution from the official BBB wiki page at eLinux. But still you may face some difficulties in doing it. Since this blog is for the noobs. I will write the steps in a noob friendly way, because I know what mistakes you can make since I have also made the same.