This are Salafi/wahabibooks.
They have a wrong interpretation of Islam.
If you ask me, nobody should read this books, this is the ideologie of the Saudi-Arabs, and the Taliban.
This ideologie is hard, without love and wrong!
We are Ehli-Sunna-vel-Jemaat, the salafis/wahabis are not.
They do not accept Iman Maturidi and Imam Aschari.
The Salafi/Wahabi tell us, that u have to take every ayat without interpretitaion.
We are Afghans and follow the real scholars, like Imam Abu Hanifa, Imam Schafi, Imam Maliki and Imam Hanbal, and not Abdul Wahab and ibn Taymia or Albani the Enemys of Islam!
Just my 2 cent and a warning!
If you wanna learn islam, look here:
http://www.sunnah.org/
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Unsern Zustand und der liebsten Abschied und
des Feindes Drang -
Alles weiss Allah, der es wird zum besten
kehren: zage nicht.