i am so worried about my phalanopthsis orchid! the leaves have yellow on them, especially around the edges.?

Hard to say what could have caused this.

It is possible the plant got too much light.

Does your friend have a water softener? Don't use soft water on your plants. The salt used in water softners are toxic to your orchids.

If it were my plant, I would first take it out of the pot and see if there is root damage.

If the roots are firm and otherwise look healthy, flush by holding plant under running water (or immerse for about 15 minutes) and repot in fresh medium. Don't fertilize until you see some improvement.

See source for information on Phalaenopsis care.

From what you have said, obviously they have been through an ordeal due to being dried out and being shipped. Being dried out is not necessarily a problem, because some orchid genus endure periods of drought in their natural environment. Others, however, cannot tolerate it. So, to really help you, we need to know what kind of orchids you bought. One thing I would be wondering about is if they experienced severe cold during shipping. They may be losing leaves due to this rather than due to anything you have done, and now that they are in a less stressful environment again they may recover just fine, albeit with a loss of some foliage. Again, knowing what orchids you have would be helpful in giving suggestions as to how you can best care for them. There are literally thousands of different kinds, each with its own needs as far as light, water, temperature, and humidity go. One thing that rarely helps and that often is fatal is over-, not under-watering. If you planted them in good quality orchid mix, watering them every couple of days is too much.