I would suggest these 2 as a good place to start reading.
https://en.wikipedia.org/wiki/A_Short_History_of_Nearly_Ever...
https://en.wikipedia.org/wiki/Sapiens:_A_Brief_History_of_Hu...
https://en.wikipedia.org/wiki/A_Short_History_of_Nearly_Ever...
https://en.wikipedia.org/wiki/Sapiens:_A_Brief_History_of_Hu...
Bryson's book is great, but it's wide-ranging pop sci, not specifically about early man.