• Government of Canada - Access to all parts of the constitution are available here. See also: http://laws-lois.justice.gc.ca/eng/const/
• CanLII (Canadian Legal Information Institute) - CanLII is a very substantial site that offers free legal information and research. The link above is a digest of charter of rights court decisions, along with the comments of Graham Garton, Q.C. 
• CBC Digital Archives - Under the “Categories” tab choose “Politics”, then subcategory “The Constitution”. Watch or listen to clips on the constitution from the CBC archives.
• Centre for Constitutional Studies - The CCS at the Unievrsity of Alberta was founded to “encourage and facilitate the interdisciplinary study of constitutional matters”. See “The Constitution” tab. Under “Publications” you can also make use of their open-access journals: ‘The Review of Constitutional Studies’ and ‘Constitutional Forum’ 
• Constitutional Law of Canada - This tab on Joseph Magnet’s site provides a short history and definitions of the constitution. His “Best Sites” tab also leads to a menu of links to other legal topics (not all on the constitution).
• David Asper Centre for Constitutional Rights - The DACCR at the University of Toronto is “devoted to advocacy, research and education in the areas of constitutional rights in Canada”. The “Resources” and the “Constitutional Cases” tabs might be of most use to you.
• PrimaryDocuments - Database of historical documents related to the drafting and adoption of the Canadian Constitution. Use the tabs to search by “Dates”, “Keywords”, or Author”.

• Canada and the Ethics of Constitutionalism
• Canada's Constitutional Revolution
• Charter Conflicts: What is Parliament's Role?
• Charter versus Federalism: the Dilemmas of Constitutional Reform
• The Courts, the Charter and the Schools: the Impact of the Charter of Rights and Freedoms on Educational Policy and Practice 1982-2007
• Federalism and the Charter: Leading Constitutional Decisions
• Just Words: Constitutional Rights and Social Wrongs
• The Myth of the Sacred: the Charter, the Courts and the Politics of the Constitution in Canada
• The Politics of the Charter: the Illusive Promise of Constitutional Rights
• Protecting Rights and Freedoms: Essays on the Charter's Place in Canada's Political, Legal, and School Law Under the Charter of Rights and Freedoms Intellectual Life
• Toward the Charter: Canadians and the Demand for a National Bill of Rights 1929-1960

Canada – Notwithstanding: the Making of the Constitution 1976-1982 KE4199 .R66 1984

Canada's Constitutional Law in a Nutshell KE4219 .F85 1994

Canadian Constitutional Documents Consolidated KE4165 1994

Canadian Politics and Government in the Charter Era KE4381.5 .M234 2006

The Charter of Rights KE4381.5 .G74 1989

The Charter of Rights & the Legalization of Politics in Canada KE4381.5 .M36 1994

Charter Politics KE4381.5 .K56 1992

The Charter Revolution and the Court Party KE4381.5 .M67 2000

Consensus Report on the Constitution: Charlottetown, August 28, 1992 KE4228 .C66 1992b

The Constitution and You KE4219 .C67 1982 (Government of Canada document)

Constitutional Law of Canada KE4219 .H6 1985

Images of a Constitution KE4219 .C66 1993

The Law of your Land: a Practical Guide to the New Canadian Constitution KE4219 .L39124 1982

Making the Law: the Courts and the Constitution KE4219 .M3544 1991

Towards a Constitutional Charter for Canada KE4219 .A74 1980