This is a very popular circular walk following the South West Coast Path to Old Harry Rocks and up to Ballard Down then back down a quiet road back to car park. On a clear day while walking along Ballard Down you can see Poole Harbour on your right, Swanage on your left and the Isle of Wight behind you.
There is on older version of this walk on the website here. It goes around the other way.
Park in the Studland South Beach car park sign posted from the B3351 that goes through the village.