Park the car on an uphill incline (nose up) & allow to cool. Then remove the cap and "burp" the upper hose by squeezing it until no more bubbles come out. Refill and continue this until squeezing just makes the coolant level rise and fall in the radiator. Next, turn the A/C temp control to hot and start the car and allow to warm up. However, if you have a defective thermostat or coolant fan temperature switch then watch that the temp doesn't climb too high.
Once the thermostat opens up, you will probably see some more bubbles. Add coolant to compensate and cap it once the bubbling stops. Shut the engine off and refill the reservoir.
Hope this helps!