I bought some tomato seeds which I started inside. I have no idea how big these plants get. The seedlings I have started are Polluck and Money Maker. Also is there a special tomato plant that produces a lot. Last year I planted a variety of plants but never got very many tomatoes. I don't know if it is the plants I bought or something to do with the soil. I planted them in a raised bed which gets a lot of sun. Thanks
Tomatoes will generally want as much light as you can give them and rich soil and moisture. They like warm weather and can be somewhat challenging around here especially near the coast. Some people start them or grow them under cover outdoors. Cherry tomatoes have been the easiest for me. There was some good discussion on growing tomatoes in this forum recently. You might want to look back through some of those posts.
You should be able to get the information how big your Tomatoes will grow from your seed supplier. There are thousands of varieties. In general, Tomato plants can grow anything between 1' and 10' tall, depending on variety and on growing conditions. Indeterminate varieties grow taller than determinate. In my opinion it is rather too late to start Tomatoes from seeds now. They need time to get established and they need time to ripen their fruit. If I lived in your area I would start my Tomatoes at the beginning of March, may be even at the end of February, and plant them outside at the end of April in the sunniest possible spot in the garden. It is difficult to say why you didn't get too much fruit last year. First thing that comes to mind is over-fertilizing and/or late planting.