Recently, a student and I were discussing his Arabic studies and how he benefited more from visual learning. Being able to picture the vocabulary he was expected to memorize was aiding him immensely in picking up the words at a quicker pace.
Although books like Lisan al-Qur’an, Arabic Tutor, and the Durus al-Lughah Madinah Book series are useful for both grammar and vocabulary for non-native speakers of the language, none of them are as simple and visually helpful as the famous al-Kitab al-Asasi. Although it is important to keep in mind that these books are all meant for students at different levels of study, it is common to see beginners start with books that make it difficult starting off. A book like al-Kitab al-Asasi helps many students in the West gradually progress through the Arabic letters and basic grammar.
I have found that this book is especially useful for new Muslims who are not familiar with any language that uses the Arabic letters or Arabic words, such as Urdu or Farsi. A pdf of the first volume of the book has been uploaded onto the site below.