microsoft excel

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has anyone here have microsoft excel 2007 - comprehensive concepts and techniques by Shelly Cashman..If you have I will buy it. I need to update my knowledge on excel since I almost forgot everything after I quit working. I knew that nowadays you must have knowledge on this. Another one I need is, New perspective on microsoft excel. by June Jamrich Parson.please help, so I can apply for a work at home..thanks everyone for replying me.