Sources:

Android Studio keyboard shortcuts:
https://resources.jetbrains.com/storage/products/intellij-idea/docs/IntelliJIDEA_ReferenceCard.pdf
https://developer.android.com/studio/intro/keyboard-shortcuts
https://gautam.io/work/android_studio_shortcuts/

Android Gradle cheatsheet:
https://github.com/danialgoodwin/dev/blob/master/android/topic/gradle-for-android-cheat-sheet.md

Android Common Views:
https://www.cs.dartmouth.edu/~sergey/cs65/cheatsheets/Common-Android-Views-Cheat-Sheet.pdf

Git cheatsheet:
https://www.git-tower.com/blog/git-cheat-sheet

Kotlin cheatsheets:
https://blog.kotlin-academy.com/kotlin-cheat-sheet-1137588c75a