The crafting recipe isn't too complicated, but mining will likely be necessary to complete it. A piston requires three wooden planks, four cobblestones, one iron ingot and one redstone dust.

Minecraft Piston Crafting Recipe. You’ll need the following materials to craft a piston: 4 Cobblestone; 1 Redstone Dust; 3 Wood Planks (Any) 1 Iron Ingot ...