A not complete list of all finegold rules. Compilation from the large number of hours that I spend watching his videos.

Never move pawns source

Always play king b1 source source

Always retreat source

Always play bishop f1/f8 source source source source source source

When your opponents pawn is on b5 you play a4 source source source source

Never trade source

When you opponent plays f5 you play e takes f5 source source

If your king is two squares in front of your pawn you’re winning source

Don’t trade pawns when there are very few pawns on the board source

A pawn on the 7th rank is worth more than a rook source source

Never play f6 source source source source

When your bishop is on c5 in a double king pawn opening and they attack your bishop, if your opponent has castled play bishop b6, otherwise you take the pawn source