Paper & materials
How to stretch watercolor paper so it dries flat
Why watercolor paper buckles, when stretching is worth it, and three reliable ways to do it: gummed tape, staples and the quick tape-down method.

What sheets, pads, brushes and pigments are made of, and how to choose them.
Why watercolor paper buckles, when stretching is worth it, and three reliable ways to do it: gummed tape, staples and the quick tape-down method.
How to choose watercolor paper: what cotton changes, what 140 lb really means, cold press vs hot press vs rough, and blocks, pads or loose sheets.