Want to learn more about how to conduct oversight? Then have a look at this volume.
"The Congressional Research Service (CRS) developed the Congressional Oversight Manual over
30 years ago, following a three-day December 1978 Workshop on Congressional Oversight and
Investigations. The workshop was organized by a group of House and Senate committee aides
from both parties and CRS at the request of the bipartisan House leadership. The Manual was
produced by CRS with the assistance of a number of House committee staffers. In subsequent
years, CRS has sponsored and conducted various oversight seminars for House and Senate staff
and updated the Manual as circumstances warranted."
The latest iteration of CRS's Oversight Manual was published in December 2014. Congressional staff can get copies via CRS.gov; everyone else can download it at https://www.everycrsreport.com/reports/RL30240.html.