CGCookie - Fundamentals of FPS UI Design

https://cgcookie.com/courses/fundamentals-of-fps-ui-design

In this course we'll delve into the UI aspects of a first person shooter. You've learned the mechanics of how to shoot a weapon, now we need to add visual elements to represent how much ammo we have, our health and armor, minimaps and even a weapon selection menu. Note that this course is heavy on C# scripting and UI in Unity so it's recommended that you watch both of these courses beforehand in order to get a better grasp of concepts taught through this course: C# Bootcamp for UnityFundamentals of UI Design In this course we'll learn how to:
Create a static crosshair that changes color based on what we're aiming at
Slice up sprite sheets
Using health bars that diminish when taking damage
Creating two different types of minimaps including UI and camera based
Implementing a UI weapon cycle menu with buttons and animations