I found some Atelier Interactive Acrylic paints for a great price on eBay so got 10 tubes to extend my range of earthy colours.

See the website for more infor on these paints. These are all series one.  This is a dual purpose acrylic and can be used for traditional painting techniques like oil paints as it extendes the wet in wet blending ability.  I am still learning about how best to blend them and find in the tropics that being under a fan in the heat dries them very quickly but if I re-wet them in time they are able to be blended.

Many You-tube videos have instructions on how to use the acrylic paints in this way.  I have embeded one here you may find useful.