They like lots of light but not direct afternoon sun in the summer. Sago palms need excellent drainage, high humidity and should be kept moderately moist. Not a true palm. This one isn't really a palm. It grows from a large swelling at the base of the stem which serves as a reservoir for water.
Ponytails make good indoor plants but can outgrow their situation.
They like it warm, tolerate dry soil and like to dry out between waterings. They never seem to have many leaves at one time, but will eventually develop trunks. They need lots of light, cannot tolerate too much water or poorly drained soil and prefer high humidity and warm temperatures. It almost looks like a miniature Areca with wispy, open foliage. Both have fronds shaped like large, deeply dissected fans.