I agree w/the others, start out slow, make some changes, and yes get on that scale that will help you see where you have come from and how well you have done and you are never to old I don't know if they have the biggest loser where you are from but they have 50+ yoa on that show and they are doing it so can you.
I would say start by wrighting down what you eat on a regular day, and see where you can start cutting out small things and adding,
for example if you drink 6 sodas a day drop it to 4 or 5 for a few weeks and keep doing that tell none or me I stoped that cold turkey for a few years, then I added a few diet sodas but I replaced the soda w/water I use to be lucky if I could drink a glass of water a week now I drink more then then they say to,
good luck and post any time,