Life is Strange: Before the Storm features an autosave system that frequently records your progress, especially after significant choices or scene transitions. This means you generally don't need to worry about manually saving your game. However, it's important to understand how it works to avoid losing progress or making irreversible decisions.
The game saves automatically at key checkpoints, such as entering new areas, completing dialogue sequences, or making major choices. There is no manual save option within the game's menu. If you quit the game, you will resume from the last autosave point. This design choice emphasizes the impact of your decisions, as you cannot simply reload an earlier save to change an outcome. Embrace the consequences of your choices, as they are a core part of the Life is Strange experience. If you wish to replay a specific episode or section, you can do so from the main menu's 'Episodes' section, but this will overwrite your current progress for that episode.