Some tips.
There are three general theories
1. see your doctor. If Doc says it is okay go ahead
2. you should be putting in 15 miles a week
3. you should be running a year
I find the third one rather prohibitive "I have a WHOLE YEAR before I can even start?" No-not in my opinion
There are a lot of great programs. Almost every marathon has a group that trains together-at all levels. I saw them a lot when I trained for my first (Richmond 2007) and it looks like a great time-very social, you'll probably make friends for life. I did it solo.
SHOES- go to an actual running store not a chain. They will probably have you walk in your shoes and then in a pair the pick for you. Buy either the shoes from them or something THEN you can go to a chain to get a deal. Zappos.com has great deals too. Shoes are going to be expensive $90+ don't skimp on the shoes. Also there is a special lacing technique to make sure the heal is seated correctly-the store should know that if they don’t PM me.
GEAR-get your gear right. Whatever makes you feel comfortable. If you care about the "Style" fine. GET REFLECTIVE GEAR if you are going to run in the dark of morning or at night. In all shoes and gear (iPod not included) you are looking at oh about $150-400. Underarmour has some great undershorts tights (my choice). Be comfortable. If you are running in the cold-get some good breathable glasses/goggles-makes a huge difference and you will feel (I do) that you are almost watching it on TV.
TRAINING- I used Hal Higdon's novice program-still do I am starting all over form my third
http://www.halhigdon.com/marathon/Mar00novice.htmall training programs are basically the same but the are tweaked by coaches.
That schedule may seem foreboding now but it won’t after a few weeks. I never did a 10 mile midweek run because of time but I did do 8 milers which meant I was up at 3:30 AM to get out the door at 4.
MIND- get your head around the fact that you are going to be running for 3,4,5,6... hours whatever your pace is going to be. It is fine to walk in training and in the race. You CAN do this. Millions have and do do it every year. You will also find some rather amazing things about yourself out their alone or even in a group. It is quite a journey. Enjoy.
BODY- If you are running over 5miles you need to eat an hour before. Oatmeal, peanut butter (not now), etc. are great. Bananas. Eat within an hour after you run too. Stretch-the new thinking seems to be that the before isn’t as important as after-I do both. I have some great back stretches if you need them. Runnersworld.com is a great resource. When your schedule says rest-REST. You will want to do some weight training (nothing huge) which helps with posture and form-arms dropping slows you down (and I am slow enough).
Great tip I just picked up-relax your jaw (run like a hounddog) to keep your shoulders from tightening up.
I am rambling forgive me.
Lastly-tracking. I use favoriterun.com but trackmyrun.com and the USATF has one too. Create a log so you can see where you have come and if you need a pick me up.
About iPods and music-I have found that sometimes it gets in the way. I go without sometimes, listen to classical etc. The USATF came out with a badly worded rule about no earphones-it was supposed to be about the skinny ones at the front but many races now say “no earphones” supposedly for insurance liability reasons (people get totally into their world and are careless around cars even in blocked off courses). Personally since I am PAYING ($65-150 for NYC) I think I should be able to do whatever I want but that is just me.
I will stop now. If you need anything else let me know.
ON EDIT- Ibuprofen... NO IBUPROFEN
BEFORE YOU RUN-kidney failure and stroke risks. Tylenol is fine. It is going to hurt (outer thighs for me) so you are going to have to deal with pain. Trust me certain runs and the finish line make it all worthwhile