Free course
Ruqaa Script Course
I recommend every beginner start with Ruqaa: it is approachable, and you’ll see your progress quickly. Watch the lessons in order, and practice each one before moving on.
The lessons are taught in Arabic. Calligraphy is learned largely by watching, and you can turn on English subtitles from the CC button in the YouTube player.
More lessons
The full course playlist on YouTube has 78 videos: the core lessons, corrections of students’ exercises, and extra videos on writing names and pieces in Ruqaa.