Android Jetpack Compose

You'll want this when building Android UIs the modern way, especially if you're tired of XML layouts. It covers the essential state management primitives like remember and mutableStateOf, plus the trickier bits like state hoisting patterns and recomposition optimization with stable keys. The skill includes practical stuff for real apps: Material 3 theming, Navigation Compose routing, and lazy lists with sticky headers. What's nice is the focus on side effects (LaunchedEffect, DisposableEffect) and ViewModel integration, which is where most developers hit friction when moving from imperative to declarative UI. Good reference for both getting started and remembering which state primitive to use when.