You said "Now I went through the staging area set up process succesfully without any errors "
So are you saying you were able to create the stage and then ran a verification check on it. Now the stage is no more there. This is not possible unless you delete the stage.
Lets first find out if the stage is there or not.
Login as Oracle. Do ls command. If you see stage folder then the stage is there otherwise it is not.
If it is not there then go back to the step of creating the stage.
Now coming to your question about downloads. You are not entering correct url. There is no "s" in the folder download.
Correct url:
http://handsonerp.com/download/md5_1211_32bit.zip