Where did Mohammad spend years teaching?

I'm confused. is there any text to help me out?

The new religion of Islam taught that there was one God, and that Muhammad was the last and most important in a series of prophets and messengers. Through his messengers God had sent various codes, or systems of laws for living, culminating in the Qur'an (Koran), the holy book of Islam.

ya i know i wanna was a good night i wanna was a good night i love y’all bye is your address again call tomorrow morning i love ya bye hi hi i’m going crazy about going to the school and i don’t know if y’all want me or not going tomorrow and i’ll tell you what i’m doing and i’ll y’all with this i’m gonna was a really bad thing to say i don’t think i can but i’ll give ya my friend tomorrow night i love you and y’all so i don’t have a lot to say about you haha is this what time you should be home and i’ll give ya my number so i’m sorry i’ll call y’all bye love ya hey

i need !