Get a Brewing Stand
Get Blaze Powder
Get Water Bottles
Get Nether Wart
Get a Golden Carrot
Put Blaze Powder in the Brewing Stand fuel slot
Put Water Bottles in the bottom slots
Brew Nether Wart to make Awkward Potion
Add Golden Carrot to the Awkward Potion
Collect the Potion of Night Vision
Optional: Add Redstone to make it last longer
Optional: Add Gunpowder to make it a Splash Potion