Sorry to be so late with my reply but I just saw this. Maybe it will help you next year.
Here are some pointers.
If your tomatoes are getting leggy they need more light. The stalk gets too tall and can't support itself. Try putting them under a fluorescent light fixture (about one inch from the light) if you can. If the tomatoes are in a window they may still be reaching for the light and turning them daily will help. That's so they don't lean too far one way.
Tomatoes also like warm feet. If you can start the seeds on top of a refrigerator or make a home made cloche (use a pop bottle) to act like a small greenhouse.
Be very careful not to over water any kind of seedlings, tomatoes included. If the potting mix is too wet and doesn't get a chance to dry out you can develop a fungus called damp-off. The plants will die for sure and you can count on throwing out all the potting mix. If you have damp-off you'll know by a small area of rot at the base of the plant, right where it fell over. If this happens make sure you sterilize or discard all of your pots and planting equipment or you will re-infect the potting mix the next time you plant the seeds.
Use a general purpose fertilizer like 20:20:20 but a very weak solution. Don't worry about the tums yet and keep them until the plants are bigger, I always put a tum or two in the hole when I plant my tomatoes in the garden. The tums are really important for good fruit production.
I hope this helps!
Brian
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