how-to
adj.（形容词）
Offering practical advice and detailed instruction in an activity.
提供关于某一活动之建议与详细指导
n.（名词）
【复数】 how-tos
Something, such as a book or learning situation, that provides practical advice and detailed instruction in an activity:
入门指导：提供关于某种活动之建议与详细指导的东西，如一本书或培训地点：
例句：
She read a how-to on plumbing. The weekend was a real how-to for would-be campers.
她读了一本关于怎么安装管道的书；这个周末对未来野营者们进行了真正的培训
