As mentioned, we all have different ways to start the seeds. My system is crude at best, and works for me. Using kitchen table and an addition shelf with south window exposure, regular lights. I use peat pellets in 10 -12 per tray, have many varieties, different sprout time etc. I top water (the horrors!!), just very careful with itty bitty seeds not yet sprouted. I use a 2 cup measuring cup, go around in the AM, water and check everyone. Some thristy, some not. The kitchen table group gets a fan blow a couple times/day (small clamp on fan). A few get a short watering later in day. In counting now, 42 trays total, 6 of those in veggie drawer of frig for chill time. That's 400+ starts.
Starting today, some of these get bumped up to 3.5" pots, and the trays of pots can go back out in sheltered area. I don't know who is happier, me or the baby plants!
I won't say all of these make, but then I'm starting some different things.
If I were just starting a veggie garden, figure what I like to eat, try some from seed, and fill in with buying starts. Even with the above going, I buy some starts.
Keep it fun. It's work, but don't let it become a burden and drag.