Seriously, I am shocked that all of you are handed godhood and choose to just get money out of it. Where is the ambition?
I would propably start with making myself insanely rich with Lotto numbers, making sure to not change history too much doing it, cause I need it to be predicable for the next step.
Next, spend a year of two on survival training with the best teachers in the modern world... modern, cause the ancient world is likely to get me killed.
Once I am ready, I will start travelling to the future, one year at a time, or six months, depending on how easy and fast it is to travel. I will keep going, ensuring my fortune remains massive through banking, until I am able to acquire my goal, clinical immortality. Once I am unable to die through old age, I will procure some protection in case of violence or accident, either cybernetic/bionic/biotic augmentation, or something like a Crysis suit. Anything that keeps me safe psychically, and is easy to conceal.
At this point, I'll probably spend the next 50-100 years travelling the past, experiencing history, gathering perspective on the human race. Eventually once I get bored, I'll start going towards the future, slowly, to space travel, even more power etc. I'll probably establish myself as the ruler of the human race to ensure their progress follows my design, but only if I have to.
Once space travel is possible, I will travel the universe, becoming progressively more powerful and experiencing everything the universe has to offer. I will only interfere if I need to stop something cataclysmic. I will witness the Big Bang. Eventually I'll probably travel to the end of this universal cycle, maybe to the next Big Bang, or maybe I'll transcend this existence as we know it.
So yeah, that's what you do when you are handed ultimate power... you dont just use to make sound investment decisions.