Guided lesson
Nominative, accusative - and calling someone by name
Ten minutes on the topic's practical pair and its one direct-address cousin: feminine -а nouns swap -а for -у as a direct object, masculine and neuter things stay unchanged, and calling someone by name uses a third form, the vocative, with no rule yet beyond memorizing it word by word. Build sentences writing and buying things before choosing and translating your way through the rest.
Word cards2
Exercises5
Listen and repeat1