Good! You are here because you wanted to use Arduino. 1st thing 1st, you will need the necessary tools to get started.
Getting Started with Arduino - Beginner's Tutorial to Open-Source
How to Upload and Run Code on an Arduino Board - Getting Started
Getting Started With Arduino : 5 Steps (with Pictures) - Instructables
Getting Started With Arduino: The Open Source Electronics Prototyping Platform: 9781680456936: Banzi, Massimo, Shiloh, Michael: Books
Getting Started With Arduino: The Open Source Electronics Prototyping Platform
Get Started with Arduino Hardware - MATLAB & Simulink Example
Arduino - Wikipedia
Getting Started With Arduino: Beginner's Complete Guide
How to Get Started with Arduino
Arduino UNO R4 Minima Overview & Getting Started Guide
Getting Started with the Arduino - Installing the IDE