In another life (I was an investment banker on wall street), I did a couple Ironman triathlons, several half-Ironmans and countless olympic and sprint distances, as well as tons of marathons. Now with my career change to EMS, I am more into weightlifting and yoga (and kinda sorta desire to get into ultrarunning...we'll see....) however I have a bunch of knowledge and left-over training plains (didn't spend $250 a month on a tri coach for nothing!).
As far as what other people are talking about in this thread... eh...... wouldn't worry so much about sneakers. Just find a pair of kicks you can run in and don't kill your feet. Maybe check out Nike Frees (less support), The Saucony Fasttwitch (more support) or the Brooks Trance (most support).
You're going to go through sneakers so fast if you're training high volume anyways that you'll have lots of time to try different brands.
Worry more about BIKE FIT!!! THIS IS SUPER KEY!! Take your bike and get it professionally fit. GET YOUR BIKE FIT PROPERLY!!!!!!!!!
This will save you aches and pains, allow you to train harder, and let you be way more aero and hence make it easier to bike. You want something that works for you as far as how aggressive or non-aggressive you want your positioning.
I disagree with Fit4Duty as far as the "best" book for triathlon training- IMHO it's Joe Friel's The Triathlete's Training Bible.
http://www.amazon.com/Triathletes-Training-Bible-Competitive-Multisport/dp/188473748X
That one book can get you through Ironman without a coach. Super detailed training programs, everything you need to know.
Also- join a tri club! The group atmosphere and training sessions will help you immensely. You'll have people to talk to about nutrition, good bike shops, and any other questions you'll have. Also it's a great resource to find out about fun upcoming races.
I would write a ton more but we are off to the beach
Good luck! That is exciting you're getting into tris... it's an expensive but fun sport. Cheers
