While it is blooming north light will be fine - and certainly no bright direct light is correct. Phals can take early morning sun and late afternoon sun but in general bright indirect light is good. Generally in the northern hemisphere north window light will be insufficient to make your phal happy long term. East light is a popular choice but keep it back from right in front of the window during three seasons (during the late fall to early spring months it will do fine in the window).
Many people who grow phals like to repot them fairly soon after getting them - in order to get them into a media that they like and to check the root quality. It is very common to have damaged roots on newly acquired phals from any number of things - most commonly over watered by well meaning people at point of sale who know very little about orchids. Most common media is bark for newbies. Moss works fantastic for those who have mastered it, but can be a little tricky for many. I would suggest you start your study on care by reviewing the AOS culture sheet found here -
AOS | Phalaenopsis
Be careful - you'll be hooked soon if you read too much!