Here the Shopping List for essential, and in the beginning, sufficient material.
It is available at art supply shops.

The Painting Surface: a painting pad, 30 x 40 should suffice for the start.
Primed, wedge-stressed canvas is, of course, available as well.

A regular Flat Brush, 4 or 5 cm wide for broad area washes.

Acrylic Paint: Titanium White, Ochre (in place of Yellow), Red and Blue.
Plus Bristle Brushes (flat), size 8 and 18

Oil Paint: Titanium White, Cadmium Yellow Lemon, Madder Lake Deep, Yellow Ochre,
Green Earth, Ultramarine Blue, Burnt Sienna.

Oxhair Brushes (flat), sizes 6, 10, 16, 20.
Possibly also a small round oxhair brush for fine lines or signature.
In addition, a small bottle of poppy-seed oil, needed, however, at a later stage.