If you can speak a little Chinese (or even if you can't and have some information written down, a map or are good at pointing) then bus travel is extremely useful especially in a city of Ganzhou's proportions. Bus travel is either RMB 1 or 2 all over the city and surrounding areas unless you are traveling long distance. This means you can get just about anywhere and I am still discovering useful services after almost two years in the city. Below are some of my most useful services.
K6 - city centre, Hongqi Dadao > Ganzhou Airport
7 - From the WuLong Hakka Ecological Park to RT Mart, via the old city wall and riverside
18 - Wenqing Lu, Hongqi Dadao and Xihe Da Qiao
19 - Hongqi Dadao, MaoYi GuangCheng wholesale market
28 - Wenqing Lu, Nanmenkou, Golden Square and Central Park
Bus is extremely easy and convenience in Ganzhou. The bus station is in Ganzhou big and most buses are quite modern and clean. The Chinese buses usually have 3 types, the super fast, normal speed and the lousy garbage bus. The super fast ones are non-smoking, ac, clean and a lady to serve you. The normal ones depend on your luck, some smokes some no, and the 3rd one is cheap and common buses where passenger have absolute freedom.
From the Ganzhou long distance bus station you can go almost anywhere in Jiangxi. There are also buses to Guangdong and Fujian.