Here are some of the programs you can try for reversing. They are according to increasing difficulty.
(I am not able to upload exe files on this host, hence all the four programs are enclosed in this zip file: reversing.zip)
It would be better if you keep the ASCII table with you and maybe even the Intel Instruction Set.
For the disassembler you can use IDA (commercial) or OllyDBG (free)
If you have any doubts feel free to contact me.
