Hello, I have been gardening for many years and I do not use hybrid seed. The short answer is that you can plant the seeds and they will grow. But the resultant tomatoes may or may not be the same size and may not taste the same as the tomato that you collected the seeds from. Hybrid seeds are a cross or 2 or more varieties with different characteristics. So when you plant seeds from them, they may turn out like one or the other original varieties which can be very different from the original hybrid seeds. I would recommend that you plant heirloom/open pollinated seeds if you want to collect your own seeds in the future.