I pre-wash everything (except pre-cuts, which I actually don't use too much) in cool or luke warm water and dry on low heat. Before washing I zigzag the cut edges to reduce loose threads. Once dry I iron, using Best Press (Fresh Linen - I love the smell of that stuff) and then fold and put away until I'm ready to use it. I have always hated to iron, but for some reason I actually enjoy ironing new fabrics. If the fabric needs a little pressing before cutting I'll iron it again, also using Best Press.