I finished HTML, JavaScript, CSS. What should i learn next ??

Answer 1

From the FAQ:
For web development: Start with HTML, and then move on to CSS, JavaScript, JQuery, PHP, and SQL.
Re: https://www.sololearn.com/faq
Also, there are Bootstrap lessons, you can learn it too😊

Answer 2

now you must learn jquery then php +database(mysql..sql)

Answer 3

JQuery, PhP, Bootstrap, SQL

Answer 4

PHP