Sightseeing
Getting around Beijing is easy. Taxis are relatively inexpensive, but the subway is very reliable and only costs RMB2 wherever you travel.
There are also several reputable tour companies operating in Beijing, for trips further afield such as to the Great Wall.
Gray Line (http://www.graylinevacations.com) has a local affiliate DTI (http://www.dtitours.com) which can offer tour choices around Beijing and throughout China.