Back up oscommerse website and upgrade hosting account smoothly

I need someone to back up my website which is operating via oscommerse, then to upgrade my godaddy hosting account from the current plan to the unlimited hosting plan. This is a simple job and may take only minutes to complete. It requires all files of the website to be backed up and then uploaded onto godaddy. You must know how to do this without any help from me. I require you to teach me through instruction with snapshots how to do this in future myself, also I require a copy of all files to be backed up. The person needs to be skilled with oscommerse and can work independently, speaks good english and communicates professionally. Easy Job, who wants it? send me a PM with how long you need to do this job, I estimate 1 hour will do it.