Introduction to Bootstrap

Not related to BSS, but about learning bootstrap. I just noticed that an excellent course (I followed it 2 years ago) is again available, for free at EDX.

Module 1: Getting Started with Bootstrap

During our first module we'll cover the basics of Bootstrap and the grid system. You'll see how to obtain and add Bootstrap to your pages, and why Bootstrap makes developing responsive pages simpler than using CSS directly. We'll also explain how the grid system works to layout your pages.

Module 2: Page Design and Data Display

Bootstrap offers several features to ensure your page is designed optimally for all screen sizes. You'll examine how to best use those capabilities to ensure users can easily consume the data they need regardless of their device type. You'll also see how to use some of the advanced components, or controls, that Bootstrap offers.

Module 3: Forms and user interaction

We'll close our exploration of Bootstrap by taking a look at how we can obtain data from the user and provide feedback. Bootstrap offers great support for customizing forms, and several options to let the user know when the form is correct or incorrect. You'll see how to add alerts and modal dialog boxes, as well as inline validation and data prompts.

Very good idea Marrco ?

A few more great free, self-paced courses from edx starting in 2017:

HTML5 and CSS Fundamentals Learn how to build Web sites using HTML5 and basic CSS, directly from W3C, creator of the latest Web standards.

HTML5 Coding Essentials and Best Practices Learn how to write Web pages and Web sites by mastering HTML5 coding techniques and best practices.

CSS Basics Learn how to take your Web pages from bland to bold with the power of CSS styling.

JavaScript Introduction Learn JavaScript, a Web development programming language, to add interactivity to your Web pages and become an expert Web developer.

and of course, after these 4 courses, don't forget to enroll in

Introduction to Bootstrap – A Tutorial Learn how to use Bootstrap to implement mobile-first web pages with CSS and JavaScript.