1. take your time - rome wasn't built in a day.
2. as some wise person said, do this for your health, thin will follow.
3. take small steps. learn about protein, carbs and monounsaturated fats first. once you get comfortable, you can learn about glycemic index and other details of the plan. there is plenty of time.
4. only use a scale to get the initial meal and snack amounts down, then use the eyball method and just come close to the zone ratios. if that doesn't work well (it likely will!) then you can dial it in later. you have time.
5. don't quite. come back here and ask questions if something isn't right.
6. start simple. get simple proteins lined (chicken breast, 1.5% cottage cheese, low fat sting cheese, low carb chocolate protein powder mix, low carb natural protein powder mix) up. buy lots of fruits and veggies (carbs) and get some good fats (almonds, peanuts and olive oil are staples for me).
i got trader joe's italian organic olive oil it tasted buttery on the front of my tongue and it tasted peppery on the back of my tongue - the sign of good olive oil. i purchased a lentil soup and added som plain pan cooked chicken to it and added a bit of olive oil - it was quite quick and tasty. :-)
7. learn to read labels. a block is 9g C, 7g P and 3g mF (1.5 is often assumed to come from lean protein so 1.5g is often mentioned as additional fat. if you eat fat free meat, add the full 3g). you total meal consumption is likely 27g C, 21g P and 9g mF.
read the product labels and add missing macronutrients to balance out your meals.
8. use your extra energy to do lots of walking and drink lots of water.
remember, you have time. don't be impatient. feeling good with extra energy while losing 1 lb of fat a week isn't disappointing - it is a miracle! most folks losing weight are miserable. not on the zone. gaining weight causes the miserable feelings.