Most people go for 100mg a week divided into two 50mg doses as a starting point. Go up from there as you need to: Go by how you feel, and also bloodwork. 500mg+ a week is equivalent to a steroid cycle, which is beyond the scope of the testosterone REPLACEMENT therapy forums. Once you get beyond around 200mg a week you are no longer replacing testosterone, but are going above normal human levels. I would recommend reading through the "Protocol" sticky.