The Lexis District of Columbia Advance Legislative Service contains the latest acts of the Council of the District of Columbia. These convenient pamphlets contain a summary of act titles, the full text of the included acts, a cumulative table of the D.C. Code sections affected along with their D.C. Register citations, as well as notes and a cumulative Index so you can find what you need quickly and compare it to the previous law.
Along with the Advance Code Service and the annual cumulative supplement to the Lexis District of Columbia Code, this is the best way to keep yourself informed on the changes to D.C. primary law.