Free online French course
Le Passé-Composé Express is a free course from Udemy instructed by Jessica Biedermann.
12 lectures and 30 minutes of video
This course offers 12 lectures and 30 mins of content aimed at teaching you to use the passé-composé properly.
For advanced beginners
These lessons are appropriate for advanced beginner French learners.
Free app, too
Udemy is an online platform whose mission is "to help anyone learn anything". All of their courses can be done online as well as on Android and iOS.