Salam, could you please explain how witr namaz is prayed and what is meant to be recited in each rakat? Because of my lack of understanding I don't pray it and therefore being sinful.
Alaikumassalam wa rahmatullah,
The witr prayer is not obligatory, so it is not sinful if you do not perform it. It is a voluntary prayer that you can perform as your last prayer of the night. You can perform it exactly the way you perform the evening (maghrib) prayer (3 rakats, you do not have to say or do anything special during it—this is the Hanafi view). For more details and for the views of other schools please see this answer on IslamOnline.net (view as a PDF).