Where to learn xml program best?

Question

is there any app like sololearn to learn xml .plz answer with link

Answer 1

You can learn from -> http://www.xmlmaster.org/en/article/d01/

Video Tutorial full in one video ->
https://www.youtube.com/watch?v=My-hyvjFaxA

You may also learn from www.w3schools.com as mentioned by @luka but these are also best places you can find out from yourself