This study guide clearly explains how to form the passé composé, taking "baby steps" with lots of practice. It starts by introducing students to the concept of conjugating a helping verb--avoir or être. Then it shows them how to form a regular past participle, gives them a list of common irregular past participles, and then explains that one should use être with the VANDERTRAMP verbs. It then explains that students should use être with reflexive verbs (and has a short grammatical note about reflexive verbs) and explains how students make past participles agree when using être as their helping verb. Finally, there is a 25 sentence practice section which reminds students step-by-step how to conjugate verbs in the passé composé and a 10 sentence practice section which shows students how to make passé composé in the negative and then asks them to do it.
The format of this document appeals to visual learners and it organizes information in a logical way. If you want to chunk information, you can copy this 13 page document 2 pages at a time so students can practice each step without becoming overwhelmed with the information.