It’s all about adjectives, which means it’s basically all vocabulary.
The endings are the same as for nouns, so take this opportunity to review (re-memorize) the Noun Ending chart (chapter 7) and work on the workbook. The best thing you can do is #1 memorize the vocabulary and #2 do the workbook (without looking at the book/charts).
BONUS! Below is a song to help you learn the Noun Endings
WARNING: this has the Feminine to the left, then the Masculine and Neuter
This also includes 3rd Declension (which we’ve not learned yet)

