First thing one should focus on to learn reason is logical fallacies, and the False Dichotomy, for example, "Reason versus religion", is right up toward the top.
I disagree. Anyone who actually reasons about their religion will shuck it in a heartbeat. There's not the slightest evidence to support one religion's claims vs. another's, so the only rational choice is to set your standard for evidence low and believe all of them, or set it high and reject all of them. And since they are mutually contradictory, reason requires you to throw one of those options out.
Religion is a culturally transmitted phenomenon, almost like language. It's no accident that if you know when and where a randomly selected person lives or lived you can predict both their language and religion with fairly high accuracy. Reason indicates that religion all about tradition, not about some objective reality.