Hailing from South America, Mexico, the Caribbean, and Florida, peperomia is a well-traveled little plant that is equally at home hanging out indoors. Although it has tropical roots, peperomia can grow happily in nearly every room in your home. Or on your desk at work.
Bright light and for the variegated types some direct sunlight (couple of hours) can help them grow well. If the leaves are dark green in color it's best not to provide direct sun as it will harm them, but the variegated types may lose variegation if enough light is not provided. South, east or west facing windows are best suited, but again dependent on the leaf color.
The baby rubber plant is fairly easy to water. Allow the top soil to dry out completely and then water thoroughly. You do not want to over water this plant and allow the soil to become waterlogged....so it might be best to lean towards less rather than too much when you first start growing Peperomias, as less harm can be caused compared to overwatering.
During winter water sparingly as the thick leaves will store water, so don't get too concerned about the soil being dry.