http://www.amazon.com/s?k=david+sinclair+book+lifespan+hardcover
It is not the perfect book on the topic, because it talks to much and doesn't give good dosage information and other help.
But the author IS a PhD working in the field at Harvard (as I recall) and arguably the best source of credible, up-to-date information on research into the aging process.
There are multiple pathways involved in aging, and in attempting to forestall it. A lot has to do with mitochondrial decline and a lot of attempted interventions are aimed there. I haven't yet read anything much about Taurine, but it ought to be pretty safe and inexpensive, as it is a common amino acid you already eat and use:
http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/expert-answers/taurine/faq-20058177