Hi NBK, I'm in England but I can still offer general advice on things to eat and avoid eating, I think the rules are pretty universal
First off, stop buying any junk food that you might have been getting. Things high in saturated fat or refined carbohydrates, and soft drinks/soda. Try and avoid snacks like potato chips, cookies, ice cream, and replace them with fruit, yogurt, and sugar free jell-o (I know that American brand, haha!)
Good things to buy are wholegrain foods, try to buy them instead of 'white' refined starchy foods like white bread, white pasta, white rice, etc. Get the 'brown' versions as they're wholegrain and have a lower glycaemic index, so they don't mess with your blood sugar and the fibre is good for you.
Eat plenty of vegetables, try to eat five a day. If you don't like drinking water out of your tap at home, get bottled water. You need to drink 1.5 litres of water per day, because it keeps your body hydrated and aids in the metabolism of body fat as you lose weight.
I think that's it for now, good luck grocery shopping and welcome to 3FC!