user handbook; user guide
A handbook or guide for users, typically in a computing or technical context.
The user handbook for this software describes the installation procedure in detail.
マニュアル is a more general term for a manual, while 利用便覧 specifically refers to a user-oriented handbook, often in computing.
手引き is a guide or introduction, often less formal and more instructional than a comprehensive handbook.
Compound of 利用 (use, utilization) and 便覧 (handbook, guide).