introductory
adj.adj. serving as a start or a first step to something. You use this to describe things like a first lesson or a special low price for new customers.
adj. serving as an introduction to a subject or activity; preliminary. Often describes materials or offers intended for beginners or first-time users.
The college offers an introductory course in psychology.
New members can take advantage of an introductory rate for the first six months of their subscription.
The author's introductory remarks provided the necessary historical context for the complex political theories discussed in the subsequent chapters.
Borrowed from Late Latin intrōductōrius, from Latin intrōductus.
Typically used attributively before a noun. Frequently pairs with nouns like 'offer', 'price', 'course', or 'chapter'.