You can get to San Jose the bus Station name is Terminal 7/10 you take the bus there the one says La Fortuna San Carlos and get here also you can take the bus to Ciudad Quesada in the same bus station 7/10 and when you in Ciudad Quesada take other transportation to get to La Fortuna San Carlos ( My best Recommendation is you take the transportation to Ciudad Quesada and then there you take the transportation to La Fortuna , Why ? Because you spend less time on the bus that way is closer)