You will find
Taxis everywhere. Never had many problems with them, but always agree on a price before hand. They can do it on the meter, but they will only take you the long way round.
Ask local shopkeepers/bar staff/hotel workers on how much a good price is so you are clued up. You can also get a Dolmus (literally means "squashed taxi", just so you know what to expect!) A minibus service that runs along most main roads and past major hotels. If your traveling far then you will probably have to change, but there should be a direct one to side city centre. Charging around 3TL this is the cheapest way to travel. They have stops, but you can ask the driver to stop anywhere on route usually. A cheap fun way of traveling, used by locals and tourists a like, Just be prepared to travel in very crowded conditions.