I can’t get any of the paint to stick to the brush?
The trick with watercolour paints is to squeeze a bit of water into the palette to ensure that the paint is nice and wet. This will allow the paint to stick to your brush.
One of the paint blocks has fallen out of the palette. How do I get it to stay in?
This sometimes happens when the paint has dried and shrunk, pulling away from the walls as it did so. To fix this simply add a couple of small drops of water to the cavity in the palette and place the dried paint block into the cavity. As the water is absorbed the paint will expand and reattach itself to the palette.