The first companion quest in The Outer Worlds is The Illustrated Manual. After completing it, you will be able to join Pastor Max to your party. This page of the guide contains a walkthrough of this quest.
- Search the collector's apartment;
- Find a diary;
- Go back to the pastor.
The task can be started in Edgewater. To unlock it, you need to talk to Pastor Max in the chapel. He will tell you about some heretical book he wants. Promise you will get it for him - this will activate the quest.
The clues that will lead you to the item are in one of the buildings located in Edgewater. Eliminate the nearby marauders to get inside. Kill the enemies fighting at the close range first, and then use the boxes as cover.
Enter the building and find a diary - it has information about the cave in which the book is located. Go there. Watch out for mines. There, you will find a safe that has the quest item - however, getting the book requires the Lockpicking skill.
Take the book to the Pastor. During the conversation, you can convince him to leave Edgewater and join you.