> It seems you have to decide, do you want to learn Moroccan Arabic, Egyptian Arabic, Levantine Arabic, Iraqi Arabic, Quranic Arabic, Modern Arabic...

Why do you want to learn Arabic? Answering this question will point you to which dialect to learn..

Do you want to read Arabic? Learn Modern Standard. Do you want to watch television and movies? Learn Egyptian. Do you want to study Islam and the Quran? Learn Quranic. Do you have a particular interest in a region and speaking with the people of that region? Learn the dialect that is predominately spoken there.