This is very simple. Open the command line and perform the following steps
First let us install the prerequisites.
sudo apt-get update sudo apt-get install lightdm sudo apt-get install lxsession
After successfully install the above packages, open the raspi-config. Type the following command in the commandline
This will open up a pop up box with various options. Select “Boot Options”
After this, you will get another list of options and select the “B1 Desktop/CLI” option.
On click of that will open up another list and here you have to select “B4 Desktop Autologin”
Here you can select any option depending upon your requirement.
Sample screenshots of the same are given below.