I want learn html and suggestions

Question

Html

Answer 1

Start from :
https://www.sololearn.com/Course/HTML/?ref=app

If the link not work, then look for the course "introduction to html " in Learn section. and start to learn.

keep follow to take exercises from lesson.
Observe code samples "try yourself" from every lesson...

Answer 2

Start with html course here and for additional info check documentation:
https://www.w3schools.com/html/

https://developer.mozilla.org/en-US/docs/Web/HTML

Most important is practice, also this tool can be good to help you validate your html code, and make sure your code is valid(most browsers will render page correctly without showing you errors in html):
https://validator.w3.org/