I have almost done with this app. pls suggest me an good Html app with more advanced learning techniques

Question

I use android

Answer 1

try w3 schools.
http://www.w3schools.com/

Answer 2

freecodecamp.com
codeacademy.com

There is not too much to learn in html, but i think you will find what you need in those links.

Answer 3

w3 schools