W3schools

W3schools is an app that allows you to quickly access tons of manuals, tutorials, and resources for several different programming languages. With it, you'll be able to learn all about HTML, CSS, JavaScript, PHP, SQL, and Bootstrap, among other languages.

The app's design is very simple and accessible. On the left side of the screen, you'll find a drop-down menu with shortcuts to tutorials and resources for the different programming languages. Simply tap on one of them to see a list of all the available information. For example, by tapping on HTML5, you can access tutorials on formatting, colors, attributes, headers, blocks, lists, tables, and styles. In many of these tutorials, you'll also find interactive exercises for practicing what you've learned.

W3schools is an excellent educational app, thanks to which you can learn more than half a dozen different programming languages. Thanks to its large collection of manuals and tutorials, you can find lots of useful information regardless of your skill level.