I am new and need of some healthy food diet

Try and gradually replace your candy and chips with healthy choices like fruit or sliced veggies for the crunch. Oh and get the chips and candy out of your house! Avoid those aisles at the store.

And don't forget to be realistic, you aren't going to go your whole life without your favorites, so allow yourself a treat a week. Pick a day and incorporate chips into your meal plan. As long as you account for them and allow for the calories, you'll be fine.
As for working out, break it down into smaller sessions and do it more often. Walk for 5-10 minutes a could times a day. When you get up, do a set or two of crunches. When you go to the bathroom, so some calf raises or squats. All sorts of ways to sneak it in!

I didn't give you many examples in my last reply...here are a few:
Add in whole grains and fresh fruits and veggies when possible, try new ones and see what you might like. Keep your fiber intake up, that will help you stay full longer and add in lean protein such as tuna, white meat chicken and turkey. Instead of french fries, get sweet potato fries and bake them...so good! Instead of chips, have air popped pop corn. instead of chocolate bars, have a 70% cocoa chocolate square instead. that is a great substitution! Also Jello mousse temptations are GREAT for a sweetness fix. Instead of a ceasar salad, have a fresh salad with vinegar dressing. instead of burgers have well...sometimes you need a burger, in that case get the leanest you can, skip the cheese and mayo, load up on veggies on top!