I'm overweight and need some weight loss
Weight loss, in the context of medicine, health, or physical fitness, refers to a reduction of the total body mass, 
So what do I need to do?
You need physical fitness,  and regular exercise ,also diet control program
Sure ,anything else?
Regular Physical exercise is any bodily activity that enhances or maintains physical fitness and overall health.
That's great how about dieting?
Just avoid eating disorder,.