Even if I give paid it less attention in recent months, my CSV Buddy software continues to receive good reviews. Here's one that takes a bit as a tutorial: CSV Buddy: Edit CSV Files And Export Them To Other Formats (thanks to Rajat Sharma).

CSV Buddy: Edit CSV Files And Export Them To Other FormatsCSV Buddy is a useful and easy to use free software to edit CSV files and export them to other formats. It provides a hassle free way to edit your CSV files and save them to a variety of popular formats. With features like a simple tabbed interface, ability to handle extremely heavy CSV files (over 100 MB), and direct previews via Notepad, CSV Buddy is quite a solid application overall.