Aula online iniciante: https://aprenderarabe.com.br/

Aula online intermediario: https://www.cursodearabe.com.br/

http://www.shibam.uk/free-arabic-lesson-2.html

Easy In this group are all the letters that are more or less exactly pronounced as their English counterparts.

http://www.arabic-course.com/arabic-alphabet.html

Medium These letters are still somewhat similar to English sounds, but already more difficult to pronounce.

Difficult These Arabic letters can prove tough to pronounce for beginners. Keep at it, though, and listen to recordings of native speakers. Eventually, your throat will hurt and you’ll get it right!