When it comes to powerpoints...I am just pretty lucky that I can write incredibly fast and neatly. People were always borrowing my notes in history classes.
But...with professors that just lecture? I am a complete mess. I basically just doodle the whole time. I come home with notebooks full of pictures.
In general I find it best to always do the assigned reading before class, take notes on that. Then when in class take notes, and have a buddy that you can compare notes with.