convenience guide; handy reference book
A compact guide or booklet containing useful information for daily life, such as phone numbers, maps, or practical tips.
Since I moved, I got a convenience guide for the new town.
This handy guide lists phone numbers for nearby hospitals and public facilities.
ガイドブック is a general guidebook (often for travel), while 便利帳 specifically emphasizes everyday convenience and local information.
Compound of 便利 (convenience) and 帳 (notebook, register).