All the French charts (VFR terminal area charts, IFR terminal procedures and IFR enroute charts) are freely available on the French Aeronautical Information Service web site (SIA) as PDF files
Visual flight procedures charts (VAC Métropole)
Instruments flight rules charts - Metropolitan France
Instruments flight rules charts - Antilles, Guyane, Saint-Pierre et Miquelon
Instruments flight rules charts - Réunion, Mayotte and Iles Eparses
DIRCAM French Military Aeronautical site) also provides a compilation of civil and military visual and instrument procedures.
Other Aeronautical Information Services freely provide up-to-date aeronautical charts ; ( europe) lists the foreign AIS web sites links ; note that some of them require you register (free registration)
NavData-Service (site maintained by Richard Stephan), a compilation of web sites that provide free aeronautical charts is also available on the excellent.
European AIS is a centralized reference database and an integrated AIS solution ; it freely provides. IFR charts for all European countries You will have to register (at no charge) to assess the available information.
US airport diagrams, visual flight procedure charts, instrument departure, arrival and approach charts end enroute charts are freely available on some sites such as MyAirplane.com, AirNav.com or Skyvector.
Jeppesen offers an extensive array of charting services and markets a FS dedicated charting software (SimCharts 3.0 for FS2004) that allows flight simulator users to sort, view, and print realistic Jeppesen terminal charts (SIDs, STARs, Approaches and Airport Diagrams) ; the entire chart library in SimCharts v3.0 has been updated to match FS2004 data.
SimPlates, is another paying application that provides similar functionalities.
Navigraph also provides worldwide IFR charts at a low cost and through a dedicated software application.
The web site IVAO Flight Operations Department Aeronautical Charts provides aeronautical Charts - Real World AIP.
He will be made easier after you had a look to the Chart clinic reprints a series of articles on the subject of reading and using Jeppesen charts). The FAA NACO Aeronautical Chart User's guide . The Aeronautical Information Manual also covers the subject in one of its chapter..