From Ankara, everday, almost every hours you may find busses to all around to Turkey. You will go from AŞTİ. In Kizilay and at some other places you may find bus companies offices.
From A.Ş.T.İ (Ankara Şehirler Arası terminal İşletmesi) you could go almost everywhere. The most popular direction is for example to Istanbul. The companies offers you prices between 25-30 YTL. Ankara is about 6 hours drive from Istanbul, depending on the traffic. There is an excellent toll freeway, the otoban, the whole way between the cities. It is not expensive to use and makes the drive faster and easier since it is a 1st-class highway by any world standard.
You could also go abroad. The popular way to go for foreigners is Syria (Aleppo – about 40-45 YTL) or Bulgaria (Sofia).
We recomend to use METRO Company, especially for a students, who want to travel and pay not so expensive for the tickets.