There is a small long-distance bus station on Tai’an Lu (泰安路) just on the east side of the old train station (soon to be new train station). Ask a taxi driver for "lǎo huǒchē zhàn". Here you can find regular buses to nearby cities including Yantai, and Ji’nan.
There is a larger bus station located on Guanxian Lu (冠县路) a few km north of the Old train station. Ask a taxi driver for "xiǎogǎng kèyùn zhàn".