I . Basics of MD simulation

http://www.ch.embnet.org/MD_tutorial/
This is a site I found very interesting and covers almost all quintessential information about MD simulation. It's a worthwhile investment to follow this page and the links it provide.

II . Why CPMD works ?

http://pra.aps.org/abstract/PRA/v44/i10/p6334_1
If you have been introduced to CPMD, you might as well wonder how a classical simulation entails most quantum aspects and abide by the Born-Oppenheimer surface. This paper gives a detailed theoretical explaination for the same. I hope you will enjoy this information as well.

III . What is CPMD ?

http://molsim.chem.uva.nl/users/ensing/thesis/node10.html
A nice introduction to CPMD. Really cleares the air around the concepts like fictitious newtonian dynamics of electrons and extended lagrangian.