Winsor & NewtonARTISAN H2O OIL BEGINNER SET

Q: How fast do these dry? I have been painting with acrylics what are the differences? Thanks

It's still an oil paint, and the use of water while painting means that the water component dries within a few days; but, the oil base itself means that the thorough complete drying time is six months to a year, before you can varnish it.

Q: If only water is needed, what is artisan h2o med linseed oil multicolor for?

I do use water mixable linseed oil in preparing my canvas and also for blending. I don't use water in any way during painting. The advantage in using water mixable oil paint is the clean up and no chemical smell.

Q: does it mean that the medium for these is water?

It means you can use water to thin your paint and wash your brushes. Still use a bit of soap on your brushes when washing. The drying time is a bit faster than regular oil paint too.