Hi
Don't feed them until they are actually swimming. If using Liquifry you need to shake the bottle really well and just add one drop then disperse it into the water with your fingers. After a few days they'll be big enough to move on to crushed flake and so on.
They will need a filter, an air-driven sponge to begin with upgrading to increasingly powerful filtration as they grow. You'll need to feed them four times a day and syphon any left-overs out after every feed. Change 25% of the water daily.
Have you thought about what you will do if you manage to raise them? As they grow you're going to need bigger and bigger tanks and if all ten survive, more than one tank. Have a look at
this article on tank sizes for goldfish and you'll see that this could be a huge problem, and with ten of them it will become an issue very quickly