There should be a globe looking object in the top right side undernearth the hood. Be careful when you do it though because if you don't give the car time to cooldown it could spray out when you open...
Using a set of a/c gauges put the blue hose on the low side (suction side) and the red hose on the high side (discharge side) and read the pressures first.
If freon is needed then keep the low...
First you use flat head screw driver to loosen the 2 clamps that hold on the air intake. Then unhook the wire that connects to the air temp sensor in the air box. Now you can remove the air intake...
If there is no dipstick then there will be a fill hole either on the top or the tranny or on the side. It will be easier if you can put it up in the air to see.