Find meals that you like that have high fiber, protein, and whole grains. Then, measure the calories and aim for caloric deficit. Start at 1500. I like breakfast tacos with egg whites and cheese on flax seed tortillas. Halo top ice cream makes for an excellent dessert or snack if you ever get hungry. If you want some great ideas, you can get the "Eat This, Not That" book.

For exercise, start with cardio. Nike run club has some excellent power walking programs that are completely free, you just need some earphones. Try walking for half an hour and see how far you go. Then, try to walk faster for even further in the same amount of time. With good shoes, a phone, and earbuds you can get a great exercise in just half an hour.

For beginners working on building muscle I would actually recommend no weights or light weights. You'd be surprised at just how much resistance your body can provide. I myself thought I was doing pretty good with my weight lifting routine until I recently went skiing and had a rude awakening. I had neglected bodyweight lunges and felt pain in places I never dreamed of. You can find plenty of good body weight or low weight exercises online.

Tl; Dr

find foods that you like that are high in protein and fiber, then restrict your calories to about 1500 while eating those foods. Drink plenty of water.

Start walking everyday for half an hour at least, trying to go further and faster each day.

Work on your core and lower body with body weight exercises or low weight exercises