Starting early veggies indoors

[DonnaMarieNJ]

Do I treat the lettuces, celery, and other early varieties as I would tomatoes? I have little luck starting these indoors. I don't want to plant seeds outdoors in the spring. I want a head start.

Do I plant the seeds like tomatoes? Do I use a seed heating pad to germinate? Do I put a lid on the tray for humidity? Do I put them under a grow light when they sprout?

What, in general should I do? I can't seem to find the right way to do this.

Thanks!