To merge or combine the first and last names in Excel you can make use of the CONCAT Ampersand, Flash Fill or TEXTJOIN functions or formulas.

Learn how to use the TEXTJOIN function in Excel. The TEXTJOIN function can be used to combine data from a range of cells using one or more delimiters.

Excel filters help you find exactly what you want, no matter how big your spreadsheet database is. Here's how to set number, text and data filters.