How to get to Valencia
The Valencia airport is about 8 km from the city centre.
There is a metro line (Line 3+5) from the airport leading to the city.
A taxi takes about 15 minutes to the city centre and costs 20 euros (including the extra fee for service from the airport).
How to get to IFIC
The tram line 4 stops at IFIC ("TVV/Television Valencia" station).
From the city, take the metro to the "Empalme" station,
and change from there to line 4.
See the metro map here (Airport is in South-West, IFIC/Empalme is at North-West):
or metrovalencia.es (available in english)