From Dasma, there are vans that transport passengers/commuters directly to Calamba City (I thnk they call this van GT Express or Garage to Terminal Express). Alternatively, you may ride a jeepney from Dasma going to Calamba City; this jeep passes through the SLEX. When you arrive in Calamba City, you may ride a bus or jeepney bound for Santa Cruz, Laguna. From Santa Cruz, ride a jeepney going to Pagsanjan. Once in Pagsanjan, you may stay in one of the resorts or hotels there which offer banca rides going to Pagsanjan Falls. It is more practical if you stay overnight in Pagsanjan. For a list of hotels and resorts in Pagsanjan, access this link: http://www.lagunatravelguide.com/index.php?page=directory-of-private-pools-and-resorts-in-laguna