Here are some notes prepared by the American Orchid Society.

AOS Phalaenopsis notes

And here is another set of notes

More advanced Phalaenopsis notes

No hurry to repot. You have never owned an orchid and are thinking of repotting. Research and getting the feel of how to look after the plant is needed before you take that step.

Enjoy your orchid.

Good information from Arthur.

It would help to know where you live (zone) what Country, etc. Also provide the type of light and temps you experience and where you are growing the orchid.

Another helpful tip is a photo of the plant, the name (tag) and the condition of the roots.

Good luck and welcome,

Jane