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.
You can find spreadsheet entry jobs by looking on the Internet, or by registering with recruitment and staffing agencies. This requires you to create a compelling profile, and they may require you to prove your skills and typing speed. The other place you can find work is in freelancing websites, where you register and look for employers interested in your skills. Looking for jobs in freelancing websites can be very challenging because the job requires fewer skills, hence it attracts more workers than other skilled jobs. To win this battle, you can combine your skills with other freelancers who have relevant and related skills to win more jobs.