A nice discussion of some important points needed by those callling to Islam
Source: http://www.islamhouse.com/p/1243
The Etiquette of Seeking Knowledge ... to adorn oneself with beautiful etiquette, noble manners, good behaviour, and pious conduct are distinguishing characteristics of the people of Islam, and knowledge - the most precious pearl in the crown of the purified Shariah - cannot be attained except by those who adorn themselves with its etiquette and those who leave evil qualities associated to it. For this reason the scholars devoted their attention to this etiquette, outlined its importance and wrote books solely on this topic; either pertaining to (general conduct] with all types of knowledge or to specific types of knowledge such as the etiquette of the carriers of the Noble Quran, the etiquette of the muhaddith, the etiquette of the mufti, the etiquette of the qazi (judge), the etiquette of the muhtasib (the one who enjoins good and forbids evil for the sake of Allah) and so on. The issue of this book is the general conduct of those who take the path of seeking the knowledge of the Sharee'ah.
Author: Baker Bin Abdullah Abu Zaid
Reveiwers: Muhammad AbdulRaoof
Translators: Murad Hilmi Al-Shuwaiq
A Book discussingthe importance of khushoo in prayer and how to achieve it
Author: Imran Hussein
Source: http://www.islamhouse.com/p/1401
This is very easy and important book which shows the shar’i rulings and their evidences. This is useful book for any Muslim hopes to abide by Islam as it should be. It contains topics e.g. purification, prayer, zakah, fasting, pilgrimage and Jihad. Afterwards, it begins to show the other rulings e.g. trade transactions, partnership, sharecropping and renting, reclamation of wastelands and possession of allowable objects, inheritance, marriage, divorce, breastfeeding, legal retribution, prescribed punishments, food, oaths and vows, and judiciary. This soft copy was not produced by Islamhouse.com but taken from one of Islamic websites.
Author: Saleh Bin Fawzaan al-Fawzaan
The best explanatory translation of the Qur'aan by Muhammad Muhsin Khan and Taqi-ud-Deen Hilaali, with verse by verse recitation embedded into the file
Translators: Muhammad Muhsin Khan - Taqi-ud-Deen Hilaali
Publisher: http://www.qurancomplex.org - King Fahd Complex For Printing The Holy Quran Website
Source: http://www.islamhouse.com/p/1241
One of the most detailed books describing the rulings of Hajj, Umrah, and visiting the Masjid of the Prophet (peace be upon him).
Author: Sayid Sabiq
Source: http://www.islamhouse.com/p/1395