Buy the air pilots manual navigation book and have a read, also worth a look at skydemon in order to better understand the airspace setup. After a while you will see that it is not that complicated after all. Interestingly having gained a clearance into Class D airspace recently and then having been asked to orbit, a shuttle callsign comes on the radio and says in a stern voice to the controller "did you know there is a high wing light aircraft circling on the coast line", the reply was "yes thanks, it is way below you so is not an issue" ..... Imagine that, a light aircraft in Class D, what was I thinking!