Salesforce admin exam -- 2

I am looking to hire an experienced professional to help me pass the Salesforce Administrator exam. This exam specifically covers topics related to Data Management, such as understanding the data structure and how to apply data correctly within Salesforce. The test is extremely rigorous, so I will not be able to refer to notes during the exam. I need someone who is knowledgeable in the Salesforce Admin realm and can help me prepare for the exam as quickly but thoroughly as possible. Thanks in advance.