The starts outlined above are all solid, but I would say not very imaginative... why not try something a little different.
I suggest a start that will use what you DO have from turn one, instead of focusing on what you don't have (fishing, mining, etc).
You start with mysticism, you are financial, you are on a lake and have seafood. Plus this is Noble, so the other Civs are not cheating on tech research.
This means you are an unstoppable dead set certainty to found an early religion, and probably both. Settle in place and work a lake or seafood tile first to get those commerce points. Your capital is shortly to become the religious and wealth capital of the world.
Once you have founded Bud and Hinduism (build warriors while you do, and go exploring) go for masonry and BW, quarry the stone and chop your way to stonehenge. You will generate a great prophet shortly, get your first shrine, and be well on your way to world power.
(Of course you will need fishing soon too, to get the food boosts).
For an example of how such a strat can really pay off - check this awesome thread:
http://forums.civfanatics.com/showthread.php?t=133492
It changed how I play Civ IV - the best lesson in making the most of your Civ's strengths that I have ever seen