How Many of These Should I Have?

I planted a bunch of seeds last weekend, and today I transplanted some of them into their own little pots. I don't really know what I'm doing here, but I have baby plants so it seems to be going OK so far. The only problem is that this is just 1 of 4 types of tomatoes that I have... and all the little containers. I guess I need to buy more. When you're growing things from seeds, how many plants are you supposed to get? Can I save the seeds for next year? I think I need to figure these things out, because I don't have room for all these plants!

I love growing things. These already have a little tomato-y smell. I'm not even a big tomato fan but I <3 these little plants.

Who else out there is growing things this year?