Allah (swt) says in the Qurʾān ﴾Say: We believe in Allah and what has been sent down to us﴿ (2:136). Therefore it is understood by the scholars of Islam that the ‘first obligation’ for a responsible adult is to know Allah.
Epistle on Worship: Risalat al-‘Ubudiyya, aims to begin filling this gap by presenting an annotated translation of one of Ibn Taymiyya’s most important epistles on the theology behind the concept of worship.
Being Muslim: A Practical Guide - Spanish Translation. This book is a compilation of essential concepts and timeless wisdom compiled from over 20 reliable authorities in Islam, bringing all of these components together in one convenient, easily readable guide.