Spreadsheet entry jobs fall under the data entry category, and they are most sought after jobs for people who want to keep themselves busy while they wait for a preferred job. The reason these jobs are popular is because they require basic computer skills; and if you need to do the job from home, all you need is a computer, Internet connection and a good typing speed.
As a spreadsheet entry worker, you must have good computer skills, especially with using spreadsheets. It is also important that you have a good typing speed, including attention to detail. You can begin this work as a high school graduate; however, to advance and apply for higher salaried jobs, you need to train yourself in other skills like transcription, writing, and translation.