To learn android development, I've used Google codelabs and I like them. Here is a list of android codelabs https://codelabs.developers.google.com/?cat=Android

To learn android development, I've used Google codelabs and I like them. Here is a list of android codelabs https://codelabs.developers.google.com/?cat=Android https://codelabs.developers.google.com/?cat=Android You can start with android fundamentals which will give you the necessary knowledge in building a shopping list app. https://codelabs.developers.google.com/codelabs/android-training-welcome/index.html?index=..%2F..index#0 https://codelabs.developers.google.com/codelabs/android-trai... For shopping list app, you probably need a database, so you could try this code lab https://codelabs.developers.google.com/codelabs/android-room-with-a-view/index.html?index=..%2F..index#0 https://codelabs.developers.google.com/codelabs/android-room... (Link for Java, they've a Kotlin version as well) If you are looking for cross platform development, you may want to try out flutter. https://flutter.dev/ https://flutter.dev/ There is a tutorial on using flutter on HN frontpage, I haven't tried it though. https://news.ycombinator.com/item?id=22454115 https://news.ycombinator.com/item?id=22454115