According to the great epic Mahabharata, Shukracharya was not only a lord of wealth but also the master of the medicinal herbs, the mantras and all kinds of tastes. His capabilities are believed to be wonderful. He had donated all his wealth to the demons and had accepted the life of a hermit. Inspired by Lord Brahma, he became a planet and started to protect the lives of all the living beings of all the three worlds. In his form of a planet he attends the assembly of Lord Brahma.
When Venus is malefic, the use of Venus yantra/Shukra yantra is very beneficial and favourable. Shukra yantra is installed on Friday when the Moon rises. Venus Yantra bestows respect, love of opposite sex and the peace of mind.
First, purify your body and start with a clear and positive mind frame.
Find a place on the floor facing east, where you will be undisturbed.
Light the incense or an oil lamp. (It does not matter how many you light).
Lay a fresh flower and a fresh fruit on the altar.
Open the Yantra and place it along with the image of the deity of Yantra and your Iisht God.
Take the water with a leaf from any tree and sprinkle the water on yourself, followed by sprinkling the water on the Yantra.
Close your eyes and concentrate on the deity to bless you with wishes. Now with all sincerity, ask Venus God for whatever you wish.