The Duke of Cambridge was welcomed by University of Cambridge officials as he began a 10-week course today.
William travelled on the 9.44am train from London King's Cross to begin his studies on an agricultural management course organised by the Cambridge Programme for Sustainability Leadership at the famous university.
He is expected to make the 46-minute commute each day for the course, which has been designed specifically for him but which will see him study alongside ordinary PhD students in some classes.
The Duke was greeted at St John's College, where some of his tutorials will take place, by vice chancellor Sir Leszek Borysiewicz along with Master of St John's Professor Christopher Dobson and Polly Courtice, director of the Programme for Sustainability Leadership.
Wearing a navy blue suit, William looked relaxed as he toured the college's grounds in the rain. He stopped to view a plaque commemorating the Queen's visit to the college in April 2011.
The course, which will end in March, has been designed to help him prepare for when he inherits the Duchy of Cornwall estate.
He will have 20 hours of teaching time each week, including work in small groups as well as one-to-one tuition and his own additional reading. He will also go on a series of field trips.
He will be taught by academics specialising in geography, land economy and plant sciences.
Modules he is expected to study include rural and planning policy, farming and supply chains, site management, agricultural policy and conservation governance.
Following the end of his service as a RAF rescue helicopter pilot in Anglesey, William is considering a number of options for public service, Kensington Palace said.
Details will be announced when he completes the course.
It is understood he travelled to Cambridge in a public carriage, although it was not clear which class of ticket he bought for the journey.