Sort out conversions on my website

I need someone who understands google adwords/analytics and paypal to sort out the conversion tracking on my e-commerce website. (Namesco Site maker).

Currently I am spending money with adwords and have no way of tracking a sale or seeing which keywords attract sales.

I have analytics set up on the website and there is data going back more than a year.
I have adwords set up but no goals set etc. I am not conversant with any of this.

So, if you know your way around these three packages and can help please let me know.

I am reluctant to change hosting/website/domain names - I would just like the existing set up to work! Thanks