Volunteer experts answer online and emailed questions about Excel. Free.

Information regarding the use of Excel by Microsoft, and the recovery of lost files.

Basic information for beginning Excel users.

Free Excel examples, tutorials and Excel consulting.

Features instructions with screenshots and animation.

Provides interactive CD training. Includes sample lessons and contact information.

Sells tutorials aimed at accountants and provides free tips. Online ordering.

Provides information on functions and charts, and tips about testing spreadsheets for errors. Includes Access help.

This site offers tutorials on Microsoft Excel.

Free visual tutorials.

Provides tips and tricks for intermediate users. Proposes a free newsletter.

Scolarly article about the auditability of spreadsheet design.

On functions, formulas, databases, forms, controls, VBA, and general. Some illustrated with Java "Viewlets".