All that will depend on many variables: dosage, quality of gh, your body, your diet etc.
To say when you will see results, well GH is subtle in a lot of ways yet if you are dieting you should see some weight loss after a month or two of continuous use, then again that will depend a lot on your diet.
Sides, very dose dependant. If you popped 10iu right now you'd get some hand cramps at night more than likely right off the bat.