1) the eggs should be placed in a fully aquatic environment.
2) raise some brineshrimp to feed the larvae after they hatched. You willl need a brineshrimp breeding chamber, a small air pump tube to change water, a syringe will help you start off the tube for water change. Syringe with a tube connected can be used to remove brineshrimp from the chamber. Then you will need a very fine fish net to filter the salt water and the shrimp, before feeding the larvae with the shrimp.
3) You will see the larvae get bigger, as they grew large enough, you may start feeding them with bloodworm (forzen bloodworm need to be fed with tweezer.) You may consider feeding other type of live small aquatic invertebrate.
4) When their gills started to disappear, you should take out the newts with the least gill and place it in a tank with very little water and a central land area, possible with some java moss all over the water area for them to rest on. Now they will try to go on land. (their might be ways to keep the entire lifecycle of CO aquatic.
http://www.caudata.org/people/JM/Cp_juv.html)
5) If you are keeping the metamorph on land. you will have to wait for a few weeks, which they will reject food. By this time, you should start preparing a terrestrial food for them. For example, buy a culture of Springtails. BUy some flightless fruitflies. If you are to feed flightless fruitflies, you will have to put a net on top of your land based enclosure to keep the flies from escaping.
6) as the metamorph get bigger, you can try to feed them frozen bloodworm as a small ball on a toothpick. This handfeeding process is time consuming, but make sure the newts are healthy. I used to feed my newts this way 2 hours per day, to raise my 70 CO metamorph.
7) soon, when you see fit, you can reintroduce them to water. I let them stayed on land for a year, before the reintroduction.
* - I used to chnage water 50% daily when they were still eggs or larvae.
** - I used a bog setting as the terrestrial setting as they metamorphs. (bog setting detail:
http://livingunderworld.org/amphibianArticles/article0020.shtml)
In summary, it is not easy to raise a newt from egg to adult, but well worth it. I started appreciating life a lot more, after knowing how difficult it is to raise a newt from egg.