Sure, I'd be happy to help you plan your 3-day itinerary in Varanasi. Here's a suggested itinerary:

Day 1:

• Start your day early with a sunrise boat ride on the Ganges River. This is a great way to experience the city and see the morning rituals of the locals.
• After the boat ride, head to the Kashi Vishwanath Temple, one of the most famous temples in Varanasi. It is dedicated to Lord Shiva and is considered one of the holiest places for Hindus.
• Next, visit the Sarnath Archaeological Site, which is located about 10 km from Varanasi. This site is where Buddha gave his first sermon after attaining enlightenment. You can explore the ruins of ancient Buddhist monasteries and stupas here.
• In the evening, attend the Ganga Aarti ceremony at Dashashwamedh Ghat. This is a beautiful ritual that takes place every evening and involves lighting lamps and offering prayers to the river.

Day 2:

• Start your day with a visit to the Assi Ghat, one of the most popular ghats in Varanasi. You can take a dip in the holy waters of the Ganges here and also witness the morning rituals of the locals.
• Next, visit the Bharat Kala Bhavan Museum, which houses a vast collection of art and artifacts from different parts of India.
• After lunch, head to the Ramnagar Fort, which is located on the opposite bank of the Ganges. This fort was built in the 18th century and is home to a museum that showcases the history and culture of Varanasi.
• In the evening, take a stroll through the narrow lanes of the old city and explore the local markets. You can also try some street food and shop for souvenirs.

Day 3:

• Start your day with a visit to the Manikarnika Ghat, which is one of the most important ghats in Varanasi. This is where the cremation rituals take place and it is considered a sacred place by Hindus.
• Next, visit the Tulsi Manas Temple, which is dedicated to Lord Rama. The temple is known for its beautiful architecture and intricate carvings.
• After lunch, head to the Banaras Hindu University, which is one of the oldest and most prestigious universities in India. You can explore the campus and visit the Bharat Kala Bhavan Museum, which is located on the university grounds.
• In the evening, attend the Sankat Mochan Music Festival, which takes place every Tuesday and Saturday. This festival features classical music performances by renowned artists and is a great way to experience the cultural heritage of Varanasi.

I hope this itinerary helps you plan your trip to Varanasi. Have a great time exploring this beautiful city!