We will surely add some guides to address that need (and many others). In the coming time we would love to expand on the documentation and clarification so you can learn Realm as easily as possible. Feel free to ping us with anything needing specific attention in the support forum: https://groups.google.com/forum/#!forum/realm-users

As for the tradeoff, I guess that heavily depends on the specifics of your app. You are the only one who can judge that depending on your current app pain points, maturity and future needs.