Did Islam begin with Muhammed?

Hello everyone I'm interested in Islam and its background and I was hopeing someone here might be able to help.

I was wondering what religion Muhammed and his peers observed before he started Islam. Did these people aknowledge the same god before?


I heard people say that Muhammed wasnt the first Muslim prophet, that there were many before him. So did the first muslims follow these older prophets before Muhammed and have any religious books?

Or did it all start with Muhammed the last prophet?



Any information on this would be appreciated. Thanks!