Car AC maintenance tips -?

Please advise on some good maintenance tips for my car AC - that will keep my AC troube free for a longer run.

i have a 2004 ford make car- and live in a place that is usually pretty hotter in summer.

is there any coolant or something that i need to check regularrly for low levels.

If it blows cold there's no maintenance necessary. If it ain't blowin as cold of air as it used to get repair. A low charge of refrigeraqnt means lack of lubrication since oils are suspended in the refrigerant. This ruins compressors and orfice tubes from something known affectionately as "BLACK DEATH"
LACK OF LUBRICASTION CAUSES WEAR ON COMPRESSOR AND ACIDS START FORMING INSIDE COMPRESSOP. THESE ACIDS GET PUMPED THRU SYATEM CORRODING ALUMINUM PARTS. THEY TURN BLACK!
always turn a/c off to vent and let blower runs for a few minutes at the end of your drive. This dries out the evaporator and keeps microbes from forming in the ventilation system. You know that gross smell some car a/c systems have? Microbes and bacteria.

Its a closed system, should never need serviced or recharged unless you have a leak, if your having to add to it then you have a slow leak around a seal or gasket some where… If it is ever needed serviced its a good idea to buy a can of Freon that has compressor oil in it… The compressor can go bad… Checking the Freon levels is not needed cause it should not change unless its leaking as I said but id also like to add in every time you do that your letting out some Freon which eventualy will make it low.

No
it is a closed system