The Art store materials
Hake brush (bamboo brush) about 1.5 inches (3 cms)
Pthalo Blue or any dark blue paint - such as Ultramarine.
I recommend Holbein because it's good quality and the cheapest. I recommend the 15 ml which are about 10 dollars.
I would recommend a cheapish watercolor paper at first until you get better. Even a multimedia sketchbook is okay. The results won't be great but it will be great for practice, you won't feel so worried about spoiling the paper and you'll save money.
4 Palette. At first a plate will do but plastic palettes are super cheap and very good.
5 Water holder. The bigger the better but at first an old cup or bowl is fine
6 Rag for drying your brush upon
8 Two big clips. For holding down the paper
9 Pencil. Nothing special for now HB is fine
10 Spray bottle. Not essential but a lot of fun.