Program Debugging

So I have been doing a lot of research on VMware lately and to understand how a VM communicates with the host I started refreshing myself on assembly code. Here is an excellent tutorial http://www.xs4all.nl/~smit/asm01001.htm Next I started to learn how Ollydbg works and I needed some practice applications. http://hackquest.de/ is a "wargame" that has many challenges including a "cracking" section. I downloaded their cracking apps and used them as practice to learn Ollydbg. Ollydbg is a powerful reverse engineering tool so, I will leave the rest of the learning process up to you.