"Minecraft" is an independently designed game, developed by Mojang Games. In this game, there are literally hundreds of different items you can craft, each of which have its own purpose, whether it is for amusement or to help you obtain more resources. Flint and steel is a type of lighter, meaning it lets you set flammable objects on fire with a single click. This tool is also required to set the portal to the Nether aflame.
Acquire flint. This can be done by quarrying gravel, a purplish grey block commonly found in pits and underwater. Hold down the left mouse button with any tool in hand to quarry the gravel; there is a 10 per cent chance of it dropping a piece of flint. Only one piece of flint is needed to make flint and steel.
Acquire iron ingots. This can be done by mining iron ore, a grey block with dark pink flecks scattered around the surface commonly found underground below sea level. Once mined, you must place it into a furnace to smelt each block into an ingot. Only one iron ingot is needed to make flint and steel.
Right-click a nearby crafting table. If you do not have one, press "I" to open your inventory and a 2-by-2 crafting grid. Fill the grid with wooden planks to create the crafting table. Right-clicking a crafting table will open a 3-by-3 grid.
Place the flint in the centre square of the first column on the grid.
Place the iron ingot in the bottom square of the centre column on the grid. A picture of the flint and steel will appear on the side of your grid.
Click the flint and steel. Click an available slot in your inventory to complete the process of crafting it.
Flint and steel can be used 65 times before breaking.