First Time Grower: yellow tips and leaves curling down

Its the shock to your dryer room environment then the clone environment at the store. Get some sort of plastic dome you can mist and put over your plant. Put it on until the plant bounces back, then take it off, if it droops again, put back on. Keep the dome on while you sleep, my history with club clones is 3 days til they adjust to your rooms new environment. put your hand at the top of the plant if your hand feels warmer then warm or hot your lights are too close. Good luck, you should be fine.