Does these html courses in sololearn covers it all?

Question

so i was thinking, if there is some additional courses that weren't been covered by this html program, same for css, javascript, jquery, php, sql

Answer 1

No, these courses are just for basics and questions are repetitive. if you want to explore more try to code your own website and apply you own imagination, I think this is a way to explore more of any web language.
you can always refer to w3 schools or stackoverflow.

Answer 2

my question is: is there is additional courses or those courses have covered it all?

Answer 3

i know, but i mean is there is any additional things that we didn't learn, like some tags in html, or some attribute..., you know what i mean?