If you want to start reading history from the beginning and you seem to can't narrow it down on what period you're most interested in; I would suggest you to first read a short general overview of different Historical periods. Start with one of these books for a general overview, then narrow your areas of interest, and then you can further indulge in different periods:

1. A Short History of the World
Book by H. G. Wells

2.Sapiens: A Brief History of Humankind
Book by Yuval Noah Harari

3.Guns, Germs, and Steel
Book by Jared Diamond