Easy way to get from Manila Airport to Angeles City please?

take an airport taxi to the bus station, just tell the taxi driver what city you want to go to, he will bring you to the correct bus terminal. same thing works in any city.

Easiest way is to hire a taxi van. just outside the arrival area beside the taxi stands. Its expensive but its the easiest and most convenient way. no more transfer and walking. directly drive you to your door step.

Yes walk out to the road & catch the bus. somebody on the street will tell you which one to ride.