Age and size will have to be factored in as to feeding--giant breeds take a year to grow to full size while the smaller ones are full size at six month--growing rabbits need more calcium and protein. Veggies get intro'ed at 4 months. Will need the pertinent info once you have your baby. Shelter bunnies are usually older and may have already been neutered so you can save that expense. They do sometimes come with behavior issues though. Mr Hoppes had been adopted 3 or 4 times and brought back. He was very skittish when we got him, would growl and box (scratch) and would run away and not like any contact. Now, he follows me around, comes when called, loves to be held and loves having his ears, head, and cheeks rubbed--he was going to be euthanized so we took him in, and, it took 3 people driving to get him here from N Calif. Let us know the info on your new bunny and we can give better advice.