You can prepare your own PCBs at your home!...
STEP : 4
After drawing the layout on the copper plated board with marker then it's the time for etching process . Now make a dark coloured solution of ferrous chloride by simply dissolving the powdered etchent in hot water .
Then put the board well immersed in the solution and wait for about 30 - 45 minutes.
After when you see the unwanted portion of copper has been etched out , take out the board and rinse it with hot (fresh) water .