Arabic has some unique aspects but mostly it's the same as learning any other language really. I mean it takes a couple of classes to get comfortable with the new alphabet and the pronunciation but I make sure not to overwhelm the student with the new letter sounds that they're introduced to. Now one of the unique things about Arabic is that Spoken Arabic is different from formal (Modern Standard Arabic) but the learner doesn't need to worry about that when they're just starting and after all it's why there are teachers lol. A native speaker can easily show the differences between formal Arabic and the dialects and simplify/make sense out of it for the student, I don't wanna go on about this lol but let me know if you're intrested in this aspect :)

Basically it's very similar to learning any other language and Arabic is a very cool language really and the rules make a lot of sense most of the time. For example, once you know how to pronounce the letters and read you don't need to hear the pronunciation of every goddamn word like in English, you know?

Hope I didn't misinterpret your question lol and let me know if you want me to be a bit more specific :)