If you purchase a high-fidelity add-on like the PMDG MD-11 (for older simulators) or upcoming modern renditions, the developers often include highly detailed, condensed versions of the FCOM and QRH (Quick Reference Handbook) directly in the aircraft's installation folder.
Be cautious when downloading PDFs from unknown Google Search results. Ensure the website is reputable, and never input credit card information or download executable files ( .exe ) disguised as document PDFs. Tips for Navigating a 2000-Page FCOM PDF md11 fcom pdf
Reading and interpreting