What is the main source of information regarding Cambyses?

In his account he says two brothers launched a rebellion against Cambyses from which class of Persians did they come from?

What are the names of the two brothers who rebelled?

What was their plan?

Why does Cambyses not think it is his brother rebelling?

What happened when Cambyses mounted his horse to ride to Susa?

Which town was he in when he stabbed himself?

Why was this name important?

Cambyses dies of gangrene after how many years as King?

What did Prexaspses say about the murder of Cambyses brother Smerdis?