At first follow the steps given in the link below upto WRITE THE RASPIAN OPERATING SYSTEM TO THE MICROSD CARD Setup Raspberry Pi Headless
To enable SSH automatically in startup without monitor all,create an empty file called “SSH” and place it in the root partition of the SD card.
Open Command prompt navigate to root drive of SD card (D: drive for example )
D:
echo>>ssh
This will create a file named ssh and enable SSH