Not to detract from Ruffian’s perky story, the amount of water depends upon the plant - but the general rule of thumb is when the soil is dry about 1" down, you moisten it thoroughly. I think. I just dump a bunch of water in the pots when they get wilty-looking. It works - not too many die too often.
Once a week seems to work for me.
And I have two pothos that have trailing branches several feet long - one longer than seven feet!!
But the cactus in the bathroom looks kinda scrawny.
what’s your favorite Mr…T quote? mine is "other than God there is no better bodyguard "
Thank you! Wow. You’re a social lifesaver, ya’ know? 
The whole dentist thing was still stirring up that grey glop of ganglia goo I’ve swimming around my brainbox.
“Did you at least floss–” my dentist would start to ask.
“Sure!”
“–no, you didn’t. Look! There’s a nipple stuck between your molars.”
What a faux pas you helped me avoid. One day I hope to marry a teacher as kind and sagacious as yerself.
Always happy to oblige, m’dear SkipMagic. 
Heh-heh. Go figure. It turns out that you really are a teacher. Naw, I work in a school district myself and I get to see the continual crop of concupiscent cuties every year, so I’m “used” to seeing chestfuls of delicious Folger’s. Not only that, but–
–oh. I’m sorry. Wasn’t this thread about something else?