Hi Go and welcome to the forum.
Before launching into how to care for your orchid, the correct spelling of the name is:
Pelatantheria insectifera.
Your orchid is in the same famiy as a Vanda and the culture will be similar. You can download a free Vanda culture sheet form the American Orchid Society website
www.aos.org.
Your orchid comes from south-east Asia and likes medium to high light, warm temperatures (60-65 at night 85+ daytime), and humidity. You could grow it in a basket like Vanda. If you have it in a basket with its roots hanging, you'll probably need to water it by spraying or soaking the roots daily or nearly so. How much humidity do you have?
Without knowing your geographical location it is difficult to be more specific.
It's a good tule of thumb to research the culture/care of an orchid before you buy it. This helps to ensure that your orchid will do better after you bring it home and will reduce your frustration with ailing plants.
Let us know if you have more questions.