Before praying : Ablutions (Wudu') from Qor'an and Sunnah الوضوء

The Holy Qur'an > Surah Al-Maidah> Verse 6

O ye who believe! when ye prepare for prayer, wash your faces, and your hands (and arms) to the elbows; rub your heads (with water); and (wash) your feet to the ankles. If ye are in a state of ceremonial impurity, bathe your whole body. But if ye are ill, or on a journey, or one of you cometh from offices of nature, or ye have been in contact with women, and ye find no water, then take for yourselves clean sand or earth, and rub therewith your faces and hands. Allah doth not wish to place you in a difficulty, but to make you clean, and to complete His favour to you, that ye may be grateful

Narrated 'Ata' bin Yasar:
Ibn 'Abbas performed ablution and washed his face (in the following way): He ladled out a handful of water, rinsed his mouth and washed his nose with it by putting in water and then blowing it out. He then, took another handful (of water) and did like this (gesturing) joining both hands, and washed his face, took another handful of water and washed his right forearm. He again took another handful of water and washed his left forearm, and passed wet hands over his head and took another handful of water and poured it over his right foot (up to his ankles) and washed it thoroughly and similarly took another handful of water and washed thoroughly his left foot (up to the ankles) and said, "I saw Allah's Apostle performing ablution in this way."

Ablution step by step :
http://www.jannah.com/learn/ablution.html http://www.jannah.com/learn/prayer.html http://www.islamway.com/english/images/prayer/pray1.htm