Hey New Chicken Mommy, don't get discouraged.
For what its worth....Here's my formula for chicks, I have gotten day olds, month olds, and hatched my own before....
Brooder: BIG rubbermaid tub, plus a 95w bulb, and one of those silver hoods for a heat lamp. For the first week or two if they are bantams, I keep the lamp is about 6" off the ground. Food and water are close by, but there is plenty of space to move if the chicks get too hot. Week 2 or 3, when i see that they are staying more to the outsides of the lamp, instead of right under it, I'll pull it up 3"-4". Eventually its clipped on the side of the bucket, then not needed at all after 4 weeks.
Food: Medicated chick starter
Substrate: I use paper towels for day old chicks, then move to shavings after the first week, just make sure they are not Cedar shavings.
Water: shallow dish with marbles, so they can't fall in and drown. Of course, I'm used to teeny tiny bantams that can drown in a teaspoon.
They LOVE hard boiled egg yolks as an extra treat, and when they are 2-4 weeks old, they will eat regular sized meal worms and small crickets as treats too.
Unless its a particularly warm sunny day, I don't usually take my chicks outside, and then its only for an hour or so.
I check them 2-3x daily for pasty butt, you know, poop stuck over their vent. Warm water and a q-tip usually does the trick.
And other than a couple birth defects, I've had 100% success.