Is Sololearn enough for basics of web development?

Answer 1

Nope... but enough for very basic website.

For professionism you gotta learn from many different platforms or resources.

Answer 2

Try LinkedIn Learning's "HTML, CSS, etc. Essentials" course.It's free and they go a bit more in-depth there. I think. At least they got videos instead of texts.
And by the way, try clicking on the green button below the certificate in the HTML course. It has some more resources for web development like Bootstrap for example.

Answer 3

W3schools is a much more informative site/platform for elaborate basic front end Developing. Sololearn is still good too but is more for practicing.