What is Bootstrap?
Is Bootstrap Open-Source?
Yes, Bootstrap is open-source licensed under MIT License (Apache License 2.0 prior to 3.1.0). You can find Bootstrap Github here.
What is inside Bootstrap?
Is it easy to learn Bootstrap?
Bootstrap is just like learning CSS, even more, easier than that. Bootstrap is just predefined classes that perform a specific task that need to learn.
Can I create a Mobile-friendly Web Page with Bootstrap?
Yes, Bootstrap main focus is to create mobile-first web pages. The creator of Bootstrap kept in mind to make mobile-friendly web pages.