Elementor is a great tool for building pages using a visual interface.
Elementor Page Builder is easy to use and give you a lot of power with regards page layout, functionality and flexibility across different screen sizes.
Below are some tutorials to get you started.
Getting Started with Elementor
The first steps to using Elementor from the people who made it.
Want to learn how to use Elementor?
Getting started with Elementor is easy, just follow this short overview tutorial. A more in-depth view on page structure and adding widgets.