My best advice would be to sow a few more seeds than you need to mitigate a few disasters!
Here are some easy crops to grow for beginners that will help you learn how to grow vegetables. Just because these are listed as easy crops, however, it does not make them failsafe. The best gardeners can fail to grow the easiest vegetables some years. We have to learn from our experiences and move on. This list is designed to give you a place to start. If something doesn’t work, it’s probably not your fault. It’s more likely that the conditions aren’t right, you have a resident pest, or something out of your control went wrong. My best advice would be to sow a few more seeds than you need to mitigate a few disasters!