How do you win this

this was the first thing i learned at school chess club when i was advanced

Yeah this was a quiz to test your knowledge

Win for white 

just play good moves

If its white to move then i think Kd2 or Kf2

This is how I would solve it.

     The white king gets in front of his pawn and moves king and pawn step-by-step down the board, keeping the king ahead of the pawn. Notice that in post #9, when white plays 6.e5+ black draws with ....Ke7. The ideal position for white is K on e6, P on e5, black K on e8, with black to move. Should black try to evade this position by remaining on the d-file, white moves to the f-file to escort his pawn to e8. (Or vice versa, black on f-file, white on d-file.) Black cannot hope to draw should white play correctly.

They are more chances for white to win

     White wins by force with correct play. It is always possible to blunder away a winning position, but the important thing here is to understand the technique and learn that white must stay ahead of the pawn and avoid letting black get the opposition when the white king is on the square immediately in front of the pawn.

6. ... Ke7 draws.

You win this ending by sending the King in IN FRONT of the Pawn.

Yeah it was just a quick example

Keep King IN FRONT of the pawn and then move the king forward then advance the pawn while it's being protected by the king in front of it, to the promotion line. From there, just get the other king into a corner with the king and newly promoted queen. Stalemate and repetition draws are super common here.

I know white will win

King to lead the pawn and convert