Ok, I used to work wildlife rescue and specialized in song birds. First of all, if there are any robin nests in your area that has babies in it that look to be the same age, put the baby in the nest. If it looks like the babies they already have, they will take care of it. This is best for everyone. If you are unable to find robin parents for it, you will need to take care of it. First of all, keep it warm. A heating pad underneath a blanket works well. A temperature of around 87 - 92 works pretty well if there are no feathers. If you use a lightbulb, the baby risks a sunburn from it. If you use a brooder light, put the baby in a small tupperware or dish inside the brooder. Then you can put a paper towel or light cloth over the dish to protect the baby from the harsh light.
I have had the best luck feeding as follows:
Get some Q-tips with cardboard applicators and cut the fuzzy ends off. Get some meat based baby food (not the chunky kind) and one of the higher protein baby cereals. Mix some baby cereal, baby food and water until the consistency is such that you can put a blob on the end of the cardboard Q-tip stick. When the baby opens its mouth shove it right down into his crop. The little cardboard sticks are much safer than tweezers and they fit nicely down into the crop. If the baby is unresponsive or won't open his mouth, warm it up in your hands. I'll warn you - it will probably poop in your hands once it warms sufficiently.
I recently had two baby robins that came down with a tree limb. I hand fed them for 4 days before finding suitable adoptive parents. The best solution is to feed them until you can find a nest with baby robins of similar age. I have raised many birds, and have a bout a 90 percent success rate. The easy part is feeding them and watching them grow. The hard part is making sure they can care for themselves in the wild.
PM or e-mail me if you need help.
Good Luck
Jody