House plants should be placed in different areas of your house depending on the plants' light requirements.  Low light plants like African violets and ZZ plants should be placed near a window that faces north.  Medium light plants like caletha and aglomenas should be placed near a window that faces east.  High light plants like palms, ferns, cacti and succlents need to be near a west or south facing window.  Most house plants need to be watered about once a week.  Succlents should be watered ever two weeks.  Cacti should only be watered once a month or less.  Fertilize your house plants two or maybe three times a year with a slow release fertilizer like Osmocote.