What happens next in this paragraph?

How to set up an inexpensive irrigation system
Purchase a faucet hose timer.
Put in fresh batteries at the beginning of each growing season.
Attach the timer to an outdoor spigot.

(a). Make sure that you place the water lines near/outside the danger zone. Otherwise, appliances, other faucets, large growths, other hoses and fixtures may get submerged in water.;
(b). Replacing the standard gas-fill hose starter would cost around 400 kg per gallon at $20. Attach one oxygen pump to the spigot and only turn the screws when all batteries are washed out.;
(c). Allow water to accumulate in the spigot for 10 to 15 years, or another time period. Look for a pump with metal stoppers.;
(d). Attach your feeder hose to the timer. At the end of your feeder hose, attach a hose manifold or multiple line splitters to accommodate the number of soaker hoses or sprinkler heads you need.;
(d).