Dev.to
The Dev.to website has a really nice article about how to build a hamburger menu using a combination of HTML, CSS, and JavaScript. I especially like how this article has step-by-step directions with images and videos to make it easy to understand.
Sharkcoder.com
The Sharkcoder.com website has an article with great interactive coding examples embedded right on the page that demonstrate how to build a hamburger menu. Towards the bottom of the page there are also 37 different examples on how the transition for a hamburger menu can be coded.
Logrocket.com
The Logrocket.com website has an article with step-by-step directions on the checkbox hack. It includes screenshots of the code, images, and videos.
Summary
Overall, all three of these websites have step-by-step directions that are easy to understand and can easily assist someone who is trying to build a hamburger menu.