Watch the video and learn about all the components that come with the arduino starter kit.

The video Unboxing Starter Kits Arduino official

The Starter Kit walks you through the basics of using the Arduino in a hands-on way. You'll learn through building several creative projects. The kit includes a selection of the most common and useful electronic components with a book of 15 projects. Starting the basics of electronics, to more complex projects, the kit will help you control the physical world with sensor and actuators.

Projects you can make:

01 GET TO KNOW YOUR TOOLS an introduction to the basics

02 SPACESHIP INTERFACE design the control panel for your starship

03 LOVE-O-METER measure how hot-blooded you are

04 COLOR MIXING LAMP produce any color with a lamp that uses light as an input

05 MOOD CUE clue people in to how you're doing

06 LIGHT THEREMIN create a musical instrument you play by waving your hands

07 KEYBOARD INSTRUMENT play music and make some noise with this keyboard

08 DIGITAL HOURGLASS a light-up hourglass that can stop you from working too much

09 MOTORIZED PINWHEEL a colored wheel that will make your head spin

10 ZOETROPE create a mechanical animation you can play forward or reverse

11 CRYSTAL BALL a mystical tour to answer all your tough questions

12 KNOCK LOCK tap out the secret code to open the door

13 TOUCHY-FEEL LAMP a lamp that responds to your touch

14 TWEAK THE ARDUINO LOGO control your personal computer from your Arduino

15 HACKING BUTTONS create a master control for all your devices!

Once you’ve mastered this knowledge, you’ll have a palette of software and circuits that you can use to create something beautiful, and make someone smile with what you invent. Then build it, hack it and share it. You can find the Arduino code for all these projects within the Arduino IDE, click on File / Examples / 10.StarterKit.
Have a look at these video tutorials for a project by project walk-through.

Unboxing the Arduino Starter Kit

This post consist s of presenting the Arduino Starter Kit.