Setting out tomato plants - I'm not a very good gardener

[Aerows]

I have a little bit of backyard with direct sunlight that is about 6' by 6'. I ordered six tomato plants and then seeds for black seed leaf lettuce, some butter lettuce and tabasco peppers. The tomato plants are coming in as seedlings, since I have been horrible at trying to gather seeds to do it myself (Craig, I wanted so badly to grow your Lucky Cross variety, but I wasn't experienced enough to keep the seeds. The sprouted even though I kept them in paper towel trying to dry them out).

I don't think I'll be horrible at it, but I have a willingness to learn, an area to do it in, and my family members could make the Gobi desert flourish. So I'm giving it a whirl this year and committing to getting some decent things growing in the garden.

Tips on how to seed the lettuce properly, how to seed the peppers properly and how to plant the tomato plants would be awesome. What kind of fertilizer I need, etc. I live in the MS delta, so we already have humid air, plenty of sunshine and rich soil.