Tara is described as seated in the pratyalidha asana, on the heart of a corpse, supreme, laughing horribly, holding cleaver, blue lotus, dagger and bowl, uttering the mantra Hum, coloured blue, her hair braided with serpents, the Ugratara.
She is the bestows all supernatural powers.
Her mantra is given in Mantra Mahodadhi as: Om Hreem Streem Hum Phat
If Om is removed it becomes the Ekajata Mantra.
If Om & Phat both are removed it becomes Nila Saraswati Mantra.
Learn how to worship Devi with the great Shodasi Mantra japa.
Those who are interested in Devi poojas this is a simple and fairly easy to perform Sriyantra pooja.
For those who don’t have the time a simple Khadgamala recital is > here
For those who have the time and inclination a full and very detailed Navavarana pooja as per the great Kaulavachara is > here
Click the links for details about these Dasa Mahavidyas, Mantras and the Yantras.