For traveling inside Myanmar you may contact Myanmar Travels and Tours for travel arrangements, hotel bookings, tourist literature and information.
Airlines Yangon has direct air-link with Bangkok, Singapore and Hong Kong. Myanmar Airways International, Thai Airways International, Biman, Aeroflot, CAAC and Silk Air Airlines operate regular flights in and out Yangon.
Taxis and limousines are available at the hotels. Getting around in Myanmar is very straigt forward, especially so if you hire a car together with a driver. The price is usually based on the distance travelled rather than the number of days/hours. Expect to pay slightly more during the peak season during November and December.
Not necessary to have a guide as the driver can always double up as a guide, interpreter or give you recommendation on accommodation.