Please help me

Hello.I'm 18 years old and I'm trying to lose weight,so can you help me? What exercises should I do to lose fat and gain some muscles? I want to lose some cm in waistline and hips and have my legs and arms less fatty,more thinner. I don't want to be very trained,just normal. I also have some problems in coping with my Gym lessons in college. And I don't have that much time for going to some kind of gym in my free time. I have no training simulators or even pilates ball at home. My parametres are: 90-70-110 I want to lose in size.