Inside the garage there should be at least one switch controlling the lighting. It is recommended that three-way switches be installed for convenience between the doors. This lighting should be in addition to any garage door lighting that you may have. Garages need a separate circuit for at least one outlet. This is generally required to be a GFCI outlet. You should check your local code to be sure. When in doubt, make it a GFCI. Any outside outlets connected must be either a GFCI outlet or an outlet connected to a GFCI breaker.