Simple Data Entry

Hello, I have 2 Microsoft Excel which have about 900 total names. The data is shown below as an example: JEFERSON PULGAR Marwan Qasem Cindy Briceño Jhon Alejandro Rodriguez Sanchez Jeandry Antonio Portillo Vera Guillermo Arreaza Ezequiel Alfonso Domoromo Gonzalez I would like a professional to separate the first name from first, middle and last name. I only need the first name and not the rest. I also want the names to be case sensitive with the first letter capitalized and the rest lowercase. All the data should match after doing so. It doesn't look like it's too difficult to do.. If you have any questions feel free to contact me. Thank you!