1.
Web 1.0 is read only web introduced at 1990
Web 2.0 is read & write web introduced at 1999
Web 3.0 is read write & own web.
More privacy & a Decentralised space is here.
2.
Web 2.0 is censored by some central authority but web 3.0 is decentralised.
3.
Web3 is built on blockchain technology.
4.
Metaverse is a new idea where we can create virtual worlds, first idea was introduced by Neal Stephenson at 1992!
5.
Virtual reality, augmented reality etc are part of Metaverse.