The last few years I have tried starting plants from seeds... Generally speaking, I get plenty of plants to start growing, but just about the time that it comes to transplant them, they die, or they end up not producing.
I start them in in red solo cups, with starting soil, and use a grow light.... I only have one grow light, but really need another one, as I tend to have to move the light back and forth every 12 hours.
I live near Philadelphia, so planting time is usually in mid to late May. My soil is terrible, so I made raised beds.
Most of the plants I am speaking about are 4" - 6" high when I am ready to move to the garden. I'm mostly talking pepper and tomato plants, but also some types of squash, usually.
I'm not really a great gardener by any means... in fact, I would call my self a very uneducated gardener... but that is why I am here, right?