This is a suggested materials list for sketching. You can purchase these, or similar, materials locally at FLAX or Blick.
Canson Sketch Book 18″ x 24″ (off-white/pastel paper useful for drawing highlights)
Fabriano Sketch Book 9″ x 9″ (or any other small sketch book that you can conveniently carry around with you)
Set of Soft Pencils (2B to 6B)
2B Woodless Pencil
Set of Conté à Paris crayon sticks (black, white and sepia)
Pencil Sharpener
Eraser
Pencil Case