What do we need to create website like facebook and youtube?

Answer 1

learn html and css, javascript, python

Answer 2

you just need a master mind. Any basic programmer can code 'The facebook' (facebook then) in a day. However, It would take a team of several developers to come up with Facebook as it is in 2017. Identify a niche that would be useful to people and sit back, serve and needs to update the site will emerge. You got to have an entrepreneurial mindset.

Answer 3

Creativity