To many people's surprise, Arabic grammar in respect of syntax, declension and declining is far less uncomplicated than what is found in most Western languages. Vocabulary is, however a challenge, due to its richness.
There are three cases to Arabic: Nominative, Accusative, and Genitive. These are controlled by the analythical structure of a sentence, certain prepositions, and use of controller words. These rules are unproblematic, but will be covered better with books for advanced studies. As for now: When listening to the sound clips here, you might have noticed that endings are often put to a noun or adjective, but that this is not written. What you here see, is the implementation of cases.

Declining of verbs is a shock to most. There are only 2 tenses. Yes, it is true! Perfect, for actions already completed, and Imperfect, for actions incompleted. There are some derivatives of these two, but for all three levels of BABEL:arabic, learning 2 tenses is practically the only main effort imposed upon you.
The bad thing is that all verbs are declined differently according to sex and numbers, leaving you with 13 forms. These, however, are strictly controlled by the rules.
As for an example of the use of Perfect and Imperfect: