Pencils
Graphite and drawing pencils are mainly chosen for hardness, core quality, point stability and the tone that is created with normal drawing pressure.
From construction line to dark accent
H gradations remain lighter and maintain a fine point; B grades are softer, darker and easier to blend. An HB or F is versatile for writing and first lines. For a set, a well-considered distribution of hardnesses is more useful than many successive gradations that you can hardly distinguish.
Paper, sharpening and erasers
Use a sharp point for detail and a longer sharpened core for broad side strokes. Structured paper makes the grain visible; smooth paper gives more precise edges. Test the eraser and blending stump on the same sheet, as harsh rubbing can burnish fibers and cause subsequent layers to adhere unevenly.
Also explore Charcoal & Graphite · Paper · Cases & Storage for compatible materials and the next step in your project.