Mantra for vidya in Hinduism is always dedicated to Goddess Saraswati, she is the Goddess of speech, letters and all kinds of learning. Here is the most powerful mantra for Vidya.
Mantra For Vidya
OM Aim Saraswati Namah
ॐ ऐं सरस्वति नमः
OM Aim Saraswati Namah
ॐ ऐं सरस्वति नमः
You should start chanting the mantra early morning on Wednesday and then continue it on every day from then onwards.
Wake up at 4:00 AM. Take bath wear clean clothes. Sit facing north or northeast and chant the mantra 7 or 21 times.
Immediately take up the study in which you want to achieve success.
Do this continuously for 44 days and you will see great results.