Getting around and about in Turkey is easy and not as complicated as it sounds. Probably the best transportation system in the world in terms of convenient.
Turkish railway is not widely spread and improved as one would expect. Trains are running regularly only between some major cities, and it is not as convenient and comfortable as the buses are.
If you wish to travel from one city to another, bus companies are operating, available 24 hours all year round to everywhere in Turkey. The most known ones are Pamukkale, Metro, Varan, Ulusoy, Kamil Koc.
Usually, their offices are within the central bus station of the town; however, in bigger Cities such as Istanbul, Antalya, and Izmir, they do have most parts of the City Booking offices; also, you can be collected from one of these booking offices and transfer to the Bus waiting at the Main Bus Station.
They are modern date vehicles with TV and Radio as well as internet facilities. There are usually free snacks and non-alcoholic drink services available on board.
Prices are cheap; your journey is comfortable, butler service on board and tea, coffee, soft drinks, biscuits and sweets are free. Regular 20-30 minutes break in spotless service stations, usually owned by the bus company.