If you placed a half pound of worms in your bin you may add a quarter of scraps daily but be sure to avoid overfeeding. If you have more scraps, freeze them. If you have enough time, you chop the scraps into smaller pieces. It will take lesser time for the worms to convert that into compost.
Foods that your worms will love include:
fruit and vegetable peelings and scraps
leftover vegetables (cooked)
Eggshells which can be grounded
Legumes and nuts without salt
coffee grounds and teabags
rice and pasta (plain)
olive oil, soybean oil and other vegetable oils
they don't like to eat these stuff:
salt and salty foods, vinegar
alcohol
meat, dairy, animal fats
citrus
onion peels
fruit pits
rotten fruits