The easiest and most convenient way of reaching Anjuna Beach from Baga and Calangute is by boat. You will find local fishermen boats at the northern part of Baga Beach that will take visitors to Anjuna Beach. You can also go to Anjuna by road, but the bus ride takes quite longer.
If you are staying anywhere else in Goa, the best way to get to the Anjuna Flea Market is by pre-paid taxi.