Nicht oder Kein?

Today we began learning putting in words with the correct matching word.

Such as:

Kein Buch

Keine Kette

And more and more…

This is where is becomes very confusing for me as each word uses a different word with a different ending. Eg. Kein/Keine, ein/eine. The best way to get this rule in our brains is to just practice it in our everyday lives. We also began learning names of common furniture and objects. I have lots of revision to do now!