From now on, Greg, every time I drive past our WalMart I will be watching for you.
LuckyOne..... hope this helps with the basics:
(Using Compressed Air...or not)
1. First drain all holding tanks, and open outside fresh water pet cock, and black low point drain plug. Close when all water is drained.
2. Turn the two hot water heater bypass valves (inside under bed) to the down/up position.
3. Hold the toilet flush valve open for 10 seconds.
4. Turn on water pump, open taps one at a time and leave open until all water is cleared.
5.  
rain hot water heater by opening outside 1-1/16ths drain plug found at exterior street side water heater door. Then reinstall plug with fresh Teflon tape.
6. Open city water plug, remove screen mesh, lightly press plastic button to free any trapped water.
7. Screw compressor air hose with blow-out adapter to city water intake.
8. Blow out all interior water lines until no water flows from taps and toilet. Shut pump.
9. Pour antifreeze down sinks to fill P-traps.
10. Optional: to fill all lines with antifreeze (never in hot or fresh water tanks), put hose into jug of pink non-toxic antifreeze, run pump until pink flows out faucets. Repeat for hot water faucet.