assembly language programming

Good day...I am a third year college student of computer science..and I am about preparing for the next semester in which we will be offering courses on assembly language programming..I would be so glad if anyone could put me through in d area of assembly languages..I am very aware that a knowledge in this area is very important in order to understand virus and anti-virus..as well as knowing how programming really works.all I need is a step by step introduction..it could be an ebook,a site for the complete tutorial or anything at all that can get me started..thank you very much as you take a step to help..

Hi Adedeji and welcome to the Ranch!

You might want to have a look at Art of Assembly Language, 2nd Edition
I didn't read it but NoStarch books are usually amazing.
Happy assembling!