A French-language technical guide for using spreadsheet software on IBM PC-compatible systems. The work presents practical instruction for readers learning to work with Excel in a personal-computing environment, with attention to the tools, commands, and workflows needed for routine spreadsheet tasks. Its focus is instructional and reference-oriented, aimed at users who need to understand how to navigate the program, enter and manage data, create formulas, format information, and organize files effectively. Published by Eyrolles in 1988, the volume reflects the computing needs of late-1980s PC users, when spreadsheet applications were becoming essential for business, technical, and administrative work. The title and subject headings indicate a practical manual rather than a narrative work, with value as historical documentation of early PC software training and office computing practices.