Earlier html elements were either inline or block but now they are divided in to seven categories. Should I learn them ?

Question

Earlier html elements were either inline or block but now they are divided in to seven categories.
Should I learn them I mean are they relevant?

Answer 1

Um,
inline - anchor, span
block - paragraph, divs
semantics - header, aside
-> You can convert these to inline/block, these tell a bit about the content inside these tags. But isn't so much relied on by search engine.

meta - information about the document

You won't need any more than these, you will use css mostly for styling so you can modify how elements work (except for meta tags) anywhere.

Answer 2

Akib Reza message me :) I need help :)