What type of light? what type of heater?
Basic start up you'll need a salt water master test kit, salt, a hydrometer or refractometer, substrate (sand or crushed coral), base rock, 2 ph and a raw unseasoned shrimp from the super market.
Put the rock and substrate in tank, mix your salt water and add to tank. Place the ph at opposite ends of tank facing each other, plug them in. Plug in your heat. Drop the shrimp in the water. Now you have 6-8 weeks to find out all the rest of the thing you need and want. Such as protein skimmer.