Welcome to minimins!
There's no real "best way". What there is, though, is a way that'll work best for you.
If you work very well in a team, are outgoing and friendly, then a method which uses weekly groups might be best for you, such as Slimming World or Weight Watchers (other diets exist which have groups, so google for slimming clubs in your local area).
If you're a bit of a dedicated self-starter with a couple of hours spare each day, calorie-counting is by far the easiest way forward. You don't
have to have an hour or two free, but it helps if you want to prepare your own meals rather than eat ready-made.
If you're determined but without a great deal of time, one of the meal-replacement diets might work for you - Slim-Fast, LighterLife, Cambridge, etc.
Understanding how your body works with food to produce and use energy is a tremendous help when trying to loose weight, but be wary of people who want to sell you things. After all, it really does just come down to a very simple equation: Use more energy than you eat.
Check out this
Calorie Calculator to see how many calories (approximately) you currently require to maintain your current weight. You might be surprised. Being heavy uses more calories than being light - and this is why people plateau when dieting, as they lose enough weight that their current diet and exercise finally matches their body's requirements.
Ultimately there are two things you must come to grips with:
1: A diet doesn't lose weight. YOU lose weight whilst eating fewer calories than you need. A diet plan is simply a tool to help YOU lose weight.
2: It will take time. Quick fixes are just temporary measures and often lead to reclaiming all that lost weight in mere months. At a healthy, sustainable rate of about 2lbs per week you can get rid of that 82lbs in under a year, so start planning for how great you're going to look at next year's Christmas Parties!
Good luck!