How to insert an image in Latex?

For almost a year I am using Latex for every application I can use it for. Even my CV is made with Latex.

However, through all this time, there were many moments that I wanted to insert an image and never did manage to. I was looking all over the internet, followed the steps, but didn't work at all! :/ :/ :/

Does anybody know? Or can help with some way..

Was confused by the path.

Here is the code

Code:

---

\documentclass[a4paper,12pt]{article}

\usepackage[english]{babel}
\usepackage{graphicx}

\begin{document}


    \includegraphics[width=0.5\textwidth]{b747NothernLights}

\end{document}

---