Don worry .. pointing upwind is something that happens to just about everybody whilst learning!
Here's a tip: It's all about balance. If you stand up the back of the board and sheet it, then it will spin the board around (head upwind). You need to have your weight more to the front, and as you pick up speed, you shuffle to the rear to counteract the "centre" of the force moving gradually backwards. Learn to 'feel' where the forces are coming from.
Tip #2: Unless you weigh around 40-50Kg, a 257 is waaaaay to small to start on - not impossible, but can make it harder than it needs to be, and you end up having less fun! More volume (1 litre floats roughly 1 Kg) will help you get going easier, and is far more forgiving while you learn the ropes...
Have Fun! :-)
Laurie