Microsoft provides "Quick Start Guides" for each app. While they don't often combine Win10 + Office into one PDF, you can download individual guides and merge them.
A comprehensive learner guide PDF should include: ms office 2019 and windows 10 learner guide pdf
: File Explorer provides quick access to common folders like Downloads and Documents, with a "Quick access" section for recently used files. Recommended Learning Resources Microsoft provides "Quick Start Guides" for each app
Quick reference sheets