Ch. 2 introduces the slave Xanthias
and the other singular endings—representing the persons, I, you, and s/he.
These regular verbs of are of two types: the first represented by
λύ-ω …I let loose
λύ-εις … you let loose
λύ-ει … he or she lets loose
The other pattern is represented by ‘love’, φιλέ-ω ---> φιλῶ
What makes this 2nd type peculiar is that the stem ends in a vowel that contracts or combines with the endings that represent ‘I, you, s/he’; Depending on dialect, you’ll find it written both ways:
φιλέ-εις ---> φιλεῖς you love
φιλέ-ει ---> φιλεῖ she or he loves.
Then, top of page 14 there is the very irregular verb ‘to be’
εἰμι --> I am ..... εἶ ---> you are .... ἐστι(ν) --> s/he is
Just learn it.
The verbs introduced in vocabulary, p.12, each follow one of these patterns (except, ‘Come!’, ἐλθέ, which is a command, like Χαῖρε).
So ἐκ-βαίν-ω... ἐκ-βαίν-εις... ἐκ-βαίν-ει means ‘I go out, you go out, he goes out’. Notice it follows the pattern of λύ-ω.
On the same pattern are
‘Drive’: ἐλαύν-ω ... ἐλαύν-εις... ἐλαύν-ει
‘Sleep’: καθ-εύδ-ω...καθεύδ-εις...καθεύδ-ει.
and ‘Hurry’: σπεύδ-ω...σπεύδ-εις...σπεύδ-ει
The only other item on the pattern of φιλέ-ω (for now) is
‘Call’: καλέ-ω --> καλῶ ... καλέ-εις --> καλεῖς ...καλέ-ει --> καλεῖ
πάρ-εστι(ν) is nothing more than our old ‘is’ ἐστι with a prefix παρ(α)
The rest of the vocabulary is perhaps best learned from the reading. So study it, along with the notes. And then see here for my reading.