Typically, it is recommended to spay or neuter between 3-4 months, since rabbits reach sexual maturity between 4-10 months of age.  There aren't any vaccinations that a rabbit requires, however nutrition is one of the most important aspect in regards to a rabbit's health.  You will need to contact your local veterinary hospital in regards to charges for services as prices vary.  Also, your veterinarian can provide you with good nutritional and husbandry information along with when routine examinations should be completed.