Someone said they dont know how to chess, (basics)

If he is threatened you need to move him

Dis bish

He protec

He go sidewayz

The middle space is his position and darker spaces is move to, essentialy could 1 then 3 or 3 then 1 to find his space.

He can start with two spaces then after he needs move 1 at time but then he goes diagonal to attac.

The person who commented was on a bishop pawn post. This is not all the rules:

Castling swaps king and king side castle.

To check mate enemy king is in danger AND cant be protected nor move from danger, ie next turn the enemy can move to take him