我 wǒ 'I, me'
你 nǐ 'you'
他 tā 'he, him'
她 tā 'she, her'
它 tā 'it'
我们 wǒmen 'we, us'
你们 nǐmen 'you'
他们 tāmen 'they, them'
There is also a polite word for 'you' either singular or plural: 您 nín
咱 zán means 'we, us' specifically including the speaker and the listener.
Note that all these personal pronouns tend to lose their tones when they follow verbs as objects.
I.e. 'this' and 'that', see Demonstrative_Adjectives.