Try books written by venerable Rerukane Chandawimala thero and venerable Mankadawala Sudassana thero.
As far as I know the if you search, you might find English translations. All books are good. As I know Rerukane Chandawimala theor's books are directly written by referring "thripitaka". Depend on your level select the book. If you are a beginner "Handbook of the Buddhist" will be a great start.
If you are totally new and if you have no idea about Buddhism just try to get the background idea about it instead of trying to dig deep. Reason is, you wont be able to handle complex things if you haven't solve your small doubts and clear things properly.
Here is link for several books. If you like, you can buy. link to several books
Please note: I'm not trying to sell or publish anything
